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151 vulnerabilities by Github

CVE-2026-8106 (GCVE-0-2026-8106)

Vulnerability from cvelistv5 – Published: 2026-05-07 21:18 – Updated: 2026-05-07 21:18
VLAI?
Title
Reflected HTML injection vulnerability in GitHub Enterprise Server Management Console login page allowed credential theft
Summary
A reflected HTML injection vulnerability was identified in the GitHub Enterprise Server Management Console login page that could allow credential theft. The redirect_to query parameter on the /setup/unlock endpoint was reflected into an HTML attribute without proper sanitization, enabling an attacker to inject a form element that could capture administrator credentials. Exploitation required an administrator to click a crafted link and enter their credentials. This vulnerability affected GitHub Enterprise Server versions 3.19.1 through 3.19.5 and 3.20.0 through 3.20.1, and was fixed in versions 3.19.6 and 3.20.2. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.19.1 , ≤ 3.19.5 (semver)
Affected: 3.20.0 , ≤ 3.20.1 (semver)
Unaffected: 3.19.0 (semver)
Unaffected: 3.21.0 (semver)
Create a notification for this product.
Credits
maksyche
Show details on NVD website

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CVE-2026-8034 (GCVE-0-2026-8034)

Vulnerability from cvelistv5 – Published: 2026-05-07 21:18 – Updated: 2026-05-07 21:18
VLAI?
Title
Server-side request forgery vulnerability in GitHub Enterprise Server notebook viewer via URL parser confusion
Summary
A server-side request forgery (SSRF) vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a different URL parser than the request library, enabling a crafted URL to pass validation while directing the request to an unintended host. Exploitation required network access to the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.16.18, 3.17.15, 3.18.9, 3.19.6, and 3.20.2. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-918 - Server-Side request forgery (SSRF)
  • CWE-436 - Interpretation Conflict
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.16.0 , ≤ 3.16.17 (semver)
Affected: 3.17.0 , ≤ 3.17.14 (semver)
Affected: 3.18.0 , ≤ 3.18.8 (semver)
Affected: 3.19.0 , ≤ 3.19.5 (semver)
Affected: 3.20.0 , ≤ 3.20.1 (semver)
Unaffected: 3.21.0 (semver)
Create a notification for this product.
Credits
R31n
Show details on NVD website

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CVE-2026-7541 (GCVE-0-2026-7541)

Vulnerability from cvelistv5 – Published: 2026-05-07 21:18 – Updated: 2026-05-07 21:18
VLAI?
Title
Denial of service vulnerability in GitHub Enterprise Server allowed service disruption via unauthenticated API endpoint
Summary
A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause service disruption by sending crafted requests with deeply nested JSON payloads to an unauthenticated API endpoint. The endpoint parsed user-controlled JSON request bodies without size or depth limits, causing excessive CPU and memory consumption. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-770 - Allocation of resources without limits or throttling
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.16.0 , ≤ 3.16.17 (semver)
Affected: 3.17.0 , ≤ 3.17.14 (semver)
Affected: 3.18.0 , ≤ 3.18.8 (semver)
Affected: 3.19.0 , ≤ 3.19.5 (semver)
Affected: 3.20.0 , ≤ 3.20.1 (semver)
Create a notification for this product.
Credits
Nguyen Nhat Anh (GitHub: anh2025)
Show details on NVD website

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CVE-2026-6736 (GCVE-0-2026-6736)

Vulnerability from cvelistv5 – Published: 2026-05-07 21:14 – Updated: 2026-05-07 21:27
VLAI?
Title
Authentication bypass vulnerability in GitHub Enterprise Server allowed creation of local user accounts bypassing the configured external identity provider
Summary
An authentication bypass vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to create a local user account, bypassing the configured external identity provider. When external authentication was enabled, the signup endpoint did not properly enforce the authentication restriction, allowing account creation and session establishment without identity provider validation. The created account was limited to the default base permissions configured on the instance. Exploitation required network access to a GHES instance configured with an external authentication provider. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18.
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.16.0 , ≤ 3.16.17 (semver)
Affected: 3.17.0 , ≤ 3.17.14 (semver)
Affected: 3.18.0 , ≤ 3.18.8 (semver)
Affected: 3.19.0 , ≤ 3.19.5 (semver)
Affected: 3.20.0 , ≤ 3.20.1 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-5845 (GCVE-0-2026-5845)

Vulnerability from cvelistv5 – Published: 2026-04-21 22:42 – Updated: 2026-04-22 18:04
VLAI?
Title
Improper authorization fallback allows scoped user-to-server token installation escape in GitHub Enterprise Server
Summary
An improper authorization vulnerability in scoped user-to-server (ghu_) token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositories outside the intended installation scope, which can include write operations, via an authorization fallback that treated a revoked/deleted installation as a global installation context, which could be chained with token revocation timing and SSH push attribution to obtain and reuse a victim-scoped token. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, and 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.20.0 , < 3.20.1 (semver)
Affected: 3.19.0 , ≤ 3.19.4 (semver)
Affected: 3.18.0 , ≤ 3.18.7 (semver)
Affected: 3.17.0 , ≤ 3.17.13 (semver)
Affected: 3.16.0 , ≤ 3.16.16 (semver)
Affected: 3.15.0 , ≤ 3.15.20 (semver)
Affected: 3.14.0 , ≤ 3.14.25 (semver)
Create a notification for this product.
Credits
ahacker1
Show details on NVD website

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CVE-2026-3307 (GCVE-0-2026-3307)

Vulnerability from cvelistv5 – Published: 2026-04-21 22:23 – Updated: 2026-04-22 18:00
VLAI?
Title
Authorization bypass in GitHub Enterprise Server secret scanning push protection allows cross-repository modification of delegated bypass reviewers
Summary
An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push protection delegated bypass reviewer list on another repository by manipulating the owner_id parameter in the request body. Authorization was verified against the repository in the URL, but the action was applied to a different repository specified in the request body. The impact is limited to assigning existing trusted users as bypass reviewers; it does not allow adding arbitrary external users. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.14.25, 3.15.20, 3.16.16, 3.17.13, 3.18.7, 3.19.4 and 3.20.1. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , ≤ 3.14.24 (semver)
Affected: 3.15.0 , ≤ 3.15.19 (semver)
Affected: 3.16.0 , ≤ 3.16.15 (semver)
Affected: 3.17.0 , ≤ 3.17.12 (semver)
Affected: 3.18.0 , ≤ 3.18.6 (semver)
Affected: 3.19.0 , ≤ 3.19.3 (semver)
Affected: 3.20 , ≤ 3.20.0 (semver)
Create a notification for this product.
Credits
ahacker1
Show details on NVD website

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CVE-2026-5512 (GCVE-0-2026-5512)

Vulnerability from cvelistv5 – Published: 2026-04-21 22:12 – Updated: 2026-04-22 17:39
VLAI?
Title
Improper authorization vulnerability in GitHub Enterprise Server allowed disclosure of private repository names via mobile upload policy API
Summary
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and validation error messages included the full repository name for repositories the caller did not have access to. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, and 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-201 - Insertion of sensitive information into sent data
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , ≤ 3.14.25 (semver)
Affected: 3.15.0 , ≤ 3.15.20 (semver)
Affected: 3.16.0 , ≤ 3.16.16 (semver)
Affected: 3.17.0 , ≤ 3.17.13 (semver)
Affected: 3.18.0 , ≤ 3.18.7 (semver)
Affected: 3.19.0 , ≤ 3.19.4 (semver)
Affected: 3.20.0 , < 3.20.1 (semver)
Create a notification for this product.
Credits
ahacker1
Show details on NVD website

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CVE-2026-4296 (GCVE-0-2026-4296)

Vulnerability from cvelistv5 – Published: 2026-04-21 22:12 – Updated: 2026-04-22 13:16
VLAI?
Title
Incorrect Regular Expression vulnerability in GitHub Enterprise Server allowed unauthorized access to user accounts via OAuth callback URL validation bypass
Summary
An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledge of a first-party OAuth application's registered callback URL could craft a malicious authorization link that, when clicked by a victim, would redirect the OAuth authorization code to an attacker-controlled domain. This could allow the attacker to gain unauthorized access to the victim's account with the scopes granted to the OAuth application. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-185 - Incorrect Regular Expression
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , ≤ 3.14.25 (semver)
Affected: 3.15.0 , ≤ 3.15.20 (semver)
Affected: 3.16.0 , ≤ 3.16.16 (semver)
Affected: 3.17.0 , ≤ 3.17.13 (semver)
Affected: 3.18.0 , ≤ 3.18.7 (semver)
Affected: 3.19.0 , ≤ 3.19.4 (semver)
Affected: 3.20.0 , < 3.20.1 (semver)
Create a notification for this product.
Credits
ahacker1 hacktron
Show details on NVD website

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CVE-2026-4821 (GCVE-0-2026-4821)

Vulnerability from cvelistv5 – Published: 2026-04-21 22:12 – Updated: 2026-04-22 13:17
VLAI?
Title
Proxy configuration command injection vulnerability found in GitHub Enterprise Server Management Console configuration API
Summary
An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an authenticated Management Console administrator to execute arbitrary OS commands via shell metacharacter injection in proxy configuration fields such as http_proxy. Exploitation of this vulnerability required access to the GitHub Enterprise Server instance and administrator privileges to the Management Console. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.20.0 , < 3.20.1 (semver)
Affected: 3.19.0 , ≤ 3.19.4 (semver)
Affected: 3.18.0 , ≤ 3.18.7 (semver)
Affected: 3.17.0 , ≤ 3.17.13 (semver)
Affected: 3.16.0 , ≤ 3.16.16 (semver)
Affected: 3.15.0 , ≤ 3.15.20 (semver)
Affected: 3.14.0 , ≤ 3.14.25 (semver)
Create a notification for this product.
Credits
Seokchan Yoon
Show details on NVD website

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CVE-2026-5921 (GCVE-0-2026-5921)

Vulnerability from cvelistv5 – Published: 2026-04-21 22:11 – Updated: 2026-04-22 13:18
VLAI?
Title
Server-Side Request Forgery in GitHub Enterprise Server allowed extraction of sensitive environment variables via timing side-channel attack
Summary
A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an attacker to extract sensitive environment variables from the instance through a timing side-channel attack against the notebook rendering service. When private mode was disabled, the notebook viewer followed HTTP redirects without revalidating the destination host, enabling an unauthenticated SSRF to internal services. By chaining this with regex filter queries against an internal API and measuring response time differences, an attacker could infer secret values character by character. Exploitation required that private mode be disabled and that the attacker be able to chain the instance's open redirect endpoint through an external redirect to reach internal services. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.14.26, 3.15.21, 3.16.17, 3.17.14, 3.18.8, 3.19.5, and 3.20.1. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , < 3.14.26 (semver)
Affected: 3.15.0 , < 3.15.21 (semver)
Affected: 3.16.0 , < 3.16.17 (semver)
Affected: 3.17.0 , < 3.17.14 (semver)
Affected: 3.18.0 , < 3.18.8 (semver)
Affected: 3.19.0 , < 3.19.5 (semver)
Affected: 3.20.0 , < 3.20.1 (semver)
Create a notification for this product.
Credits
R31n
Show details on NVD website

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CVE-2026-3582 (GCVE-0-2026-3582)

Vulnerability from cvelistv5 – Published: 2026-03-10 18:56 – Updated: 2026-03-11 14:13
VLAI?
Title
Incorrect Authorization in GitHub Enterprise Server allows access to issue and commit search results without repo scope
Summary
An Incorrect Authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with a classic personal access token (PAT) lacking the repo scope to retrieve issues and commits from private and internal repositories via the search REST API endpoints. The user must have had existing access to the repository through organization membership or as a collaborator for the vulnerability to be exploitable. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.16.15, 3.17.12, 3.18.6 and 3.19.3. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.16.0 , ≤ 3.16.14 (semver)
Affected: 3.17.0 , ≤ 3.17.11 (semver)
Affected: 3.18.0 , ≤ 3.18.5 (semver)
Affected: 3.19.0 , ≤ 3.19.2 (semver)
Create a notification for this product.
Credits
Sergej Ljubojevic
Show details on NVD website

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CVE-2026-2266 (GCVE-0-2026-2266)

Vulnerability from cvelistv5 – Published: 2026-03-10 18:55 – Updated: 2026-03-11 14:15
VLAI?
Title
Improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed cross-site scripting via task list content and enabled arbitrary HTML injection
Summary
An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed DOM-based cross-site scripting via task list content. The task list content extraction logic did not properly re-encode browser-decoded text nodes before rendering, allowing user-supplied HTML to be injected into the page. An authenticated attacker could craft malicious task list items in issues or pull requests to execute arbitrary scripts in the context of another user's browser session. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.18.6 and 3.19.3. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.18.0 , ≤ 3.18.5 (semver)
Affected: 3.19.0 , ≤ 3.19.2 (semver)
Create a notification for this product.
Credits
André Storfjord Kristiansen
Show details on NVD website

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CVE-2026-3306 (GCVE-0-2026-3306)

Vulnerability from cvelistv5 – Published: 2026-03-10 17:46 – Updated: 2026-03-11 14:17
VLAI?
Title
Improper authorization in GitHub Projects allows modification of issue and pull request metadata without repository write access
Summary
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed a user with read access to a repository and write access to a project to modify issue and pull request metadata through the project. When adding an item to a project that already existed, column value updates were applied without verifying the actor's repository write permissions. This vulnerability was reported via the GitHub Bug Bounty program and has been fixed in GitHub Enterprise Server versions 3.14.24, 3.15.19, 3.16.15, 3.17.12, 3.18.6 and 3.19.3.
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , ≤ 3.14.23 (semver)
Affected: 3.15.0 , ≤ 3.15.18 (semver)
Affected: 3.16.0 , ≤ 3.16.14 (semver)
Affected: 3.17.0 , ≤ 3.17.11 (semver)
Affected: 3.18.0 , ≤ 3.18.5 (semver)
Affected: 3.19.0 , ≤ 3.19.2 (semver)
Create a notification for this product.
Credits
ahacker1
Show details on NVD website

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CVE-2026-3854 (GCVE-0-2026-3854)

Vulnerability from cvelistv5 – Published: 2026-03-10 17:37 – Updated: 2026-04-29 03:55
VLAI?
Title
Remote code execution via git push option injection in GitHub Enterprise Server
Summary
An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an attacker with push access to a repository to achieve remote code execution on the instance. During a git push operation, user-supplied push option values were not properly sanitized before being included in internal service headers. Because the internal header format used a delimiter character that could also appear in user input, an attacker could inject additional metadata fields through crafted push option values. This vulnerability was reported via the GitHub Bug Bounty program and has been fixed in GitHub Enterprise Server versions 3.14.25, 3.15.20, 3.16.16, 3.17.13, 3.18.7 and 3.19.4.
CWE
  • CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , ≤ 3.14.24 (semver)
Affected: 3.15.0 , ≤ 3.15.19 (semver)
Affected: 3.16.0 , ≤ 3.16.15 (semver)
Affected: 3.17.0 , ≤ 3.17.12 (semver)
Affected: 3.18.0 , ≤ 3.18.6 (semver)
Affected: 3.19.0 , ≤ 3.19.3 (semver)
Create a notification for this product.
Credits
Sagi Tzadik @ Wiz.io
Show details on NVD website

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CVE-2026-29783 (GCVE-0-2026-29783)

Vulnerability from cvelistv5 – Published: 2026-03-06 16:39 – Updated: 2026-03-11 03:56
VLAI?
Title
GitHub Copilot CLI allows for dangerous shell expansion patterns that enable arbitrary command execution
Summary
The shell tool within GitHub Copilot CLI versions prior to and including 0.0.422 can allow arbitrary code execution through crafted bash parameter expansion patterns. An attacker who can influence the commands executed by the agent (e.g., via prompt injection through repository files, MCP server responses, or user instructions) can exploit bash parameter transformation operators to execute hidden commands, bypassing the safety assessment that classifies commands as "read-only." This has been patched in version 0.0.423. The vulnerability stems from how the CLI's shell safety assessment evaluates commands before execution. The safety layer parses and classifies shell commands as either read-only (safe) or write-capable (requires user approval). However, several bash parameter expansion features can embed executable code within arguments to otherwise read-only commands, causing them to appear safe while actually performing arbitrary operations. The specific dangerous patterns are ${var@P}, ${var=value} / ${var:=value}, ${!var}, and nested $(cmd) or <(cmd) inside ${...} expansions. An attacker who can influence command text sent to the shell tool - for example, through prompt injection via malicious repository content (README files, code comments, issue bodies), compromised or malicious MCP server responses, or crafted user instructions containing obfuscated commands - could achieve arbitrary code execution on the user's workstation. This is possible even in permission modes that require user approval for write operations, since the commands can appear to use only read-only utilities to ultimately trigger write operations. Successful exploitation could lead to data exfiltration, file modification, or further system compromise.
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
Impacted products
Vendor Product Version
github copilot-cli Affected: <= 0.0.422
Create a notification for this product.
Show details on NVD website

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CVE-2018-25188 (GCVE-0-2018-25188)

Vulnerability from cvelistv5 – Published: 2026-03-06 12:19 – Updated: 2026-03-09 19:00
VLAI?
Title
Webiness Inventory 2.3 SQL Injection via WsModelGrid.php
Summary
Webiness Inventory 2.3 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the order parameter. Attackers can send POST requests to the WsModelGrid.php endpoint with crafted SQL payloads to extract sensitive database information including usernames, databases, and version details.
CWE
  • CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
Impacted products
Date Public ?
2018-11-11 12:00
Credits
Ihsan Sencan
Show details on NVD website

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CVE-2026-1999 (GCVE-0-2026-1999)

Vulnerability from cvelistv5 – Published: 2026-02-18 20:44 – Updated: 2026-04-14 15:09
VLAI?
Title
Incorrect Authorization vulnerability was identified in GitHub Enterprise Server that allowed unauthorized merging of pull requests
Summary
An incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to merge their own pull request into a repository without having push access by exploiting an authorization bypass in the enable_auto_merge mutation for pull requests. This issue only affected repositories that allow forking as the attack relies on opening a pull request from an attacker-controlled fork into the target repository. Exploitation was only possible in specific scenarios. It required a clean pull request status and only applied to branches without branch protection rules enabled. This vulnerability affected GitHub Enterprise Server versions prior to 3.19.2, 3.18.5, and 3.17.11, and was fixed in versions 3.19.2, 3.18.5, and 3.17.11. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-863 - Incorrect Authorization
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.17.0 , < 3.17.11 (semver)
Affected: 3.18.0 , < 3.18.5 (semver)
Affected: 3.19.0 , < 3.19.2 (semver)
Create a notification for this product.
Credits
ahacker1
Show details on NVD website

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CVE-2026-1355 (GCVE-0-2026-1355)

Vulnerability from cvelistv5 – Published: 2026-02-18 20:42 – Updated: 2026-02-20 19:36
VLAI?
Title
Missing Authorization Check in GitHub Enterprise Server Allows Unauthorized Uploads to Repository Migration Exports
Summary
A Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to upload unauthorized content to another user’s repository migration export due to a missing authorization check in the repository migration upload endpoint. By supplying the migration identifier, an attacker could overwrite or replace a victim’s migration archive, potentially causing victims to download attacker-controlled repository data during migration restores or automated imports. An attacker would require authentication to the victim's GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.2, 3.18.5, 3.17.11, 3.16.14, 3.15.18, 3.14.23. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.19.0 , ≤ 3.19.1 (semver)
Affected: 3.18.0 , ≤ 3.18.4 (semver)
Affected: 3.17.0 , ≤ 3.17.10 (semver)
Affected: 3.16.0 , ≤ 3.16.13 (semver)
Affected: 3.15.0 , ≤ 3.15.17 (semver)
Affected: 3.14.0 , ≤ 3.14.22 (semver)
Create a notification for this product.
Credits
ahacker1
Show details on NVD website

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CVE-2026-0573 (GCVE-0-2026-0573)

Vulnerability from cvelistv5 – Published: 2026-02-18 20:37 – Updated: 2026-02-18 21:20
VLAI?
Title
Improper Handling of HTTP Redirects vulnerability was identified in GitHub Enterprise Server that allowed leaking of authorization token and enabled remote code execution
Summary
An URL redirection vulnerability was identified in GitHub Enterprise Server that allowed attacker-controlled redirects to leak sensitive authorization tokens. The repository_pages API insecurely followed HTTP redirects when fetching artifact URLs, preserving the authorization header containing a privileged JWT. An authenticated user could redirect these requests to an attacker-controlled domain, exfiltrate the Actions.ManageOrgs JWT, and leverage it for potential remote code execution. Attackers would require access to the target GitHub Enterprise Server instance and the ability to exploit a legacy redirect to an attacker-controlled domain. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.19 and was fixed in versions 3.19.2, 3.18.4, 3.17.10, 3.16.13, 3.15.17, and 3.14.22. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14 , ≤ 3.14.21 (semver)
Affected: 3.15 , ≤ 3.15.16 (semver)
Affected: 3.16 , ≤ 3.16.12 (semver)
Affected: 3.17 , ≤ 3.17.9 (semver)
Affected: 3.18 , ≤ 3.18.3 (semver)
Affected: 3.19 , ≤ 3.19.1 (semver)
Create a notification for this product.
Credits
R31n
Show details on NVD website

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CVE-2021-47832 (GCVE-0-2021-47832)

Vulnerability from cvelistv5 – Published: 2026-01-16 19:09 – Updated: 2026-01-21 16:41
VLAI?

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as a duplicate.

Replaced by CVE-2022-50920

Show details on NVD website

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CVE-2025-13744 (GCVE-0-2025-13744)

Vulnerability from cvelistv5 – Published: 2026-01-06 20:44 – Updated: 2026-01-06 21:02
VLAI?
Title
Improper Neutralization of Input During Web Page Generation vulnerability was identified in GitHub Enterprise Server that allowed rendering of malicious HTML
Summary
An Improper Neutralization of Input During Web Page Generation vulnerability was identified in GitHub Enterprise Server that allowed attacker controlled HTML to be rendered by the Filter component (search) across GitHub that could be used to exfiltrate sensitive information. An attacker would require permissions to create or modify the names of milestones, issues, pull requests, or similar entities that are rendered in the vulnerable filter/search components. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.1, and 3.18.2, 3.17.8, 3.16.11, 3.15.15, and 3.14.20. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , ≤ 3.14.19 (semver)
Affected: 3.15.0 , ≤ 3.15.14 (semver)
Affected: 3.16.0 , ≤ 3.16.10 (semver)
Affected: 3.17.0 , ≤ 3.17.7 (semver)
Affected: 3.18.0 , ≤ 3.18.1 (semver)
Affected: 3.19 , ≤ 3.19.0 (semver)
Create a notification for this product.
Credits
Roshan Kudave Johan Carlsson
Show details on NVD website

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CVE-2025-14046 (GCVE-0-2025-14046)

Vulnerability from cvelistv5 – Published: 2025-12-11 17:52 – Updated: 2025-12-11 18:48
VLAI?
Title
Insufficient HTML Sanitization Allows User-Controlled DOM Elements to Overwrite Server-Initialized Data Islands and Trigger Unintended Server-Side POST Requests
Summary
An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed user-supplied HTML to inject DOM elements with IDs that collided with server-initialized data islands. These collisions could overwrite or shadow critical application state objects used by certain Project views, leading to unintended server-side POST requests or other unauthorized backend interactions. Successful exploitation requires an attacker to have access to the target GitHub Enterprise Server instance and to entice a privileged user to view crafted malicious content that includes conflicting HTML elements. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18.3, 3.17.9, 3.16.12, 3.15.16, and 3.14.21.
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Unaffected: 3.19.0 (semver)
Affected: 3.18.0 , ≤ 3.18.2 (semver)
Affected: 3.17.0 , ≤ 3.17.8 (semver)
Affected: 3.16.0 , ≤ 3.16.11 (semver)
Affected: 3.15.0 , ≤ 3.15.15 (semver)
Affected: 3.14.0 , ≤ 3.14.20 (semver)
Create a notification for this product.
Credits
André Storfjord Kristiansen
Show details on NVD website

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CVE-2025-11578 (GCVE-0-2025-11578)

Vulnerability from cvelistv5 – Published: 2025-11-10 22:44 – Updated: 2025-12-02 20:08
VLAI?
Title
Pre-Receive Hook Path Collision Vulnerability in GitHub Enterprise Server Allowing Privilege Escalation
Summary
A privilege escalation vulnerability was identified in GitHub Enterprise Server that allowed an authenticated Enterprise admin to gain root SSH access to the appliance by exploiting a symlink escape in pre-receive hook environments. By crafting a malicious repository and environment, an attacker could replace system binaries during hook cleanup and execute a payload that adds their own SSH key to the root user’s authorized keys—thereby granting themselves root SSH access to the server. To exploit this vulnerability, the attacker needed to have enterprise admin privileges. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.19, and was fixed in versions 3.14.20, 3.15.15, 3.16.11, 3.17.8, 3.18.2. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14 , ≤ 3.14.19 (semver)
Affected: 3.15 , ≤ 3.15.14 (semver)
Affected: 3.16 , ≤ 3.16.10 (semver)
Affected: 3.17 , ≤ 3.17.7 (semver)
Affected: 3.18 , ≤ 3.18.1 (semver)
Create a notification for this product.
Credits
inspector-ambitious
Show details on NVD website

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CVE-2025-11892 (GCVE-0-2025-11892)

Vulnerability from cvelistv5 – Published: 2025-11-10 22:43 – Updated: 2025-11-12 20:12
VLAI?
Title
DOM-based Cross-Site Scripting was identified in GitHub Enterprise Server Issues search allows privilege escalation and unauthorized workflow triggers
Summary
An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allows DOM-based cross-site scripting via Issues search label filter that could lead to privilege escalation and unauthorized workflow triggers. Successful exploitation requires an attacker to have access to the target GitHub Enterprise Server instance and to entice a user, while operating in sudo mode, to click on a crafted malicious link to perform actions that require elevated privileges. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18.1, 3.17.7, 3.16.10, 3.15.14, 3.14.19.
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.18.0 , < 3.18.1 (semver)
Affected: 3.17.0 , ≤ 3.17.6 (semver)
Affected: 3.16.0 , ≤ 3.16.9 (semver)
Affected: 3.15.0 , ≤ 3.15.13 (semver)
Affected: 3.14.0 , ≤ 3.14.18 (semver)
Create a notification for this product.
Credits
André Storfjord Kristiansen
Show details on NVD website

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CVE-2025-8447 (GCVE-0-2025-8447)

Vulnerability from cvelistv5 – Published: 2025-08-26 01:42 – Updated: 2025-08-26 18:34
VLAI?
Title
Incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed read-only access
Summary
An improper access control vulnerability was identified in GitHub Enterprise Server that allowed users with access to any repository to retrieve limited code content from another repository by creating a diff between the repositories. To exploit this vulnerability, an attacker needed to know the name of a private repository along with its branches, tags, or commit SHAs that they could use to trigger compare/diff functionality and retrieve limited code without proper authorization. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18, and was fixed in versions 3.14.17, 3.15.12, 3.16.8 and 3.17.5. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14 , ≤ 3.14.16 (semver)
Affected: 3.15 , ≤ 3.15.11 (semver)
Affected: 3.16 , ≤ 3.16.7 (semver)
Affected: 3.17 , ≤ 3.17.4 (semver)
Create a notification for this product.
Credits
furbreeze
Show details on NVD website

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CVE-2025-6981 (GCVE-0-2025-6981)

Vulnerability from cvelistv5 – Published: 2025-07-15 20:44 – Updated: 2025-07-16 19:04
VLAI?
Title
Incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed unauthorized read-only access
Summary
An incorrect authorization vulnerability allowed unauthorized read access to the contents of internal repositories for contractor accounts when the Contractors API feature was enabled. The Contractors API is a rarely-enabled feature in private preview. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18 and was fixed in versions 3.14.15, 3.15.10, 3.16.6 and 3.17.3
CWE
  • CWE-863 - Incorrect Authorization
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , < 3.14.15 (semver)
Affected: 3.15.0 , < 3.15.10 (semver)
Affected: 3.16.0 , < 3.16.6 (semver)
Affected: 3.17.0 , < 3.17.3 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2025-6600 (GCVE-0-2025-6600)

Vulnerability from cvelistv5 – Published: 2025-07-01 18:56 – Updated: 2025-07-01 19:38
VLAI?
Title
GitHub Enterprise Server Information Disclosure Vulnerability Exposes Private Repository Names via Search API
Summary
An exposure of sensitive information vulnerability was identified in GitHub Enterprise Server that could allow an attacker to disclose the names of private repositories within an organization. This issue could be exploited by leveraging a user-to-server token with no scopes via the Search API endpoint. Successful exploitation required an organization administrator to install a malicious GitHub App in the organization’s repositories. This vulnerability impacted only GitHub Enterprise Server version 3.17 and was addressed in version 3.17.2. The vulnerability was reported through the GitHub Bug Bounty program.
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
Impacted products
Vendor Product Version
GitHub GitHub Enterprise Server Affected: 3.17.0 , ≤ 3.17.1 (semver)
Create a notification for this product.
Credits
Kyle Carberry Ammar Bandukwala
Show details on NVD website

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CVE-2025-3246 (GCVE-0-2025-3246)

Vulnerability from cvelistv5 – Published: 2025-04-17 22:50 – Updated: 2025-04-18 12:01
VLAI?
Title
Markdown math block sanitization bypass allows privilege escalation and unauthorized workflow triggers
Summary
An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed cross-site scripting in GitHub Markdown that used `$$..$$` math blocks. Exploitation required access to the target GitHub Enterprise Server instance and privileged user interaction with the malicious elements. This vulnerability affected version 3.16.1 of GitHub Enterprise Server and was fixed in version 3.16.2. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
GitHub GitHub Enterprise Server Affected: 3.16 , ≤ 3.16.1 (semver)
Create a notification for this product.
Credits
André Storfjord Kristiansen
Show details on NVD website

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CVE-2025-3509 (GCVE-0-2025-3509)

Vulnerability from cvelistv5 – Published: 2025-04-17 22:50 – Updated: 2025-06-18 21:07
VLAI?
Title
Pre-Receive Hook Remote Code Execution vulnerability was identified in GitHub Enterprise Server that allowing Privilege Escalation
Summary
A Remote Code Execution (RCE) vulnerability was identified in GitHub Enterprise Server that allowed attackers to execute arbitrary code by exploiting the pre-receive hook functionality, potentially leading to privilege escalation and system compromise. The vulnerability involves using dynamically allocated ports that become temporarily available, such as during a hot patch upgrade. This means the vulnerability is only exploitable during specific operational conditions, which limits the attack window. Exploitation required either site administrator permissions to enable and configure pre-receive hooks or a user with permissions to modify repositories containing pre-receive hooks where this functionality was already enabled. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18 and was fixed in versions 3.17.1, 3.16.4, 3.15.8, 3.14.13, 3.13.16. This vulnerability was reported via the GitHub Bug Bounty program.
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.13.0 , ≤ 3.13.15 (semver)
Affected: 3.14.0 , ≤ 3.14.12 (semver)
Affected: 3.15.0 , ≤ 3.15.7 (semver)
Affected: 3.16.0 , ≤ 3.16.3 (semver)
Affected: 13.17.0 , < 13.17.1 (semver)
Create a notification for this product.
Credits
R31n
Show details on NVD website

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CVE-2025-3124 (GCVE-0-2025-3124)

Vulnerability from cvelistv5 – Published: 2025-04-17 22:50 – Updated: 2025-04-18 12:02
VLAI?
Title
Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed unauthorized access to private repository names
Summary
A missing authorization vulnerability was identified in GitHub Enterprise Server that allowed a user to see the names of private repositories that they wouldn't otherwise have access to in the Security Overview in GitHub Advanced Security. The Security Overview was required to be filtered only using the `archived:` filter and all other access controls were functioning normally. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.17 and was fixed in versions 3.13.14, 3.14.11, 3.15.6, and 3.16.2.
CWE
Assigner
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.13.0 , ≤ 3.13.13 (semver)
Affected: 3.14.0 , ≤ 3.14.10 (semver)
Affected: 3.15.0 , ≤ 3.15.5 (semver)
Affected: 3.16.0 , ≤ 3.16.1 (semver)
Unaffected: 3.17.0
Create a notification for this product.
Show details on NVD website

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