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Common Weakness Enumeration

CWE-918

Allowed

Server-Side Request Forgery (SSRF)

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

5528 vulnerabilities reference this CWE, most recent first.

CVE-2026-79749 (GCVE-0-2026-79749)

Vulnerability from cvelistv5 – Published: 2026-08-31 17:54 – Updated: 2026-08-31 18:48
VLAI
Title
MCPHub: SSRF Guard Bypass via IPv6 Transition Addresses in URL Validation
Summary
MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.32, MCPHub's SSRF guard in src/utils/ssrf.ts uses a custom isBlockedIpv6 function that only checks for loopback, link-local, unique-local, IPv4-mapped, and IPv4-compatible IPv6 addresses. IPv6 transition address families -- NAT64 (64:ff9b::/96), 6to4 (2002::/16), and Teredo (2001::/32) -- are not checked. An attacker who can specify a URL for an MCP server connection can encode a private IPv4 address inside one of these IPv6 forms to bypass the SSRF guard and reach internal infrastructure. This issue has been patched in version 1.0.32.
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 18:48 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
samanhappy mcphub Affected: < 1.0.32
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-79747 (GCVE-0-2026-79747)

Vulnerability from cvelistv5 – Published: 2026-08-31 17:55 – Updated: 2026-08-31 19:35
VLAI
Title
MCPHub vulnerable to SSRF: a non-admin user can make mcphub request arbitrary URLs and read the response (OpenAPI proxy + transport dial)
Summary
MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.32, an authenticated non-admin user can register a server pointing at an arbitrary URL and make the hub issue server-side requests to it, with no egress filtering (no block of loopback / RFC1918 / link-local 169.254.0.0/16). Via the OpenAPI proxy path the response body is returned to the caller (full, reflected SSRF); via the SSE/streamable-http transport the request is sent blind. This issue has been patched in version 1.0.32.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 19:35 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
samanhappy mcphub Affected: < 1.0.32
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-79717 (GCVE-0-2026-79717)

Vulnerability from cvelistv5 – Published: 2026-08-25 14:53 – Updated: 2026-08-27 14:35
VLAI
Title
Galaxy_ng: galaxy_ng: blind ssrf via namespace avatar_url with no private-address restriction
Summary
A server-side request forgery (SSRF) vulnerability was found in galaxy_ng, the Ansible Galaxy server plugin for Pulp. An authenticated user with namespace management permissions can set a namespace avatar URL to an arbitrary address, including internal networks, loopback, or cloud instance metadata endpoints. A background worker fetches that URL without checking the destination, which lets the attacker probe internal services and enumerate reachable IP addresses. The HTTP client is also configured without an overall timeout, so a slow or non-responsive target can pin workers and cause a denial of service.
Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 14:27 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Ansible Automation Platform 2     cpe:/a:redhat:ansible_automation_platform:2
Create a notification for this product.
Date Public
2026-08-25 13:40
Credits
Red Hat would like to thank Arpit Jain (independent security researcher) for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-79671 (GCVE-0-2026-79671)

Vulnerability from cvelistv5 – Published: 2026-08-25 11:33 – Updated: 2026-08-29 11:48
VLAI
Title
Ech0 before 4.4.3 SSRF via DNS Resolution Bypass
Summary
Ech0 before 4.4.3 contains a server-side request forgery vulnerability in the validateWebhookURL function (webhook_setting_service.go), which only validates literal IP addresses via net.ParseIP() and fails to reject hostnames that DNS-resolve to private or internal IPs (e.g., 169.254.169.254.nip.io). An attacker with admin privileges can create a webhook with such a hostname to bypass validation and cause the server to make requests to internal services, cloud metadata endpoints, and private network resources. The issue is fixed in 4.4.3.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
5.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 15:12 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
lin-snow Ech0 Affected: 0 , < 4.4.3 (semver)
Unaffected: 4.4.3 (semver)
    cpe:2.3:a:ech0:ech0:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-04-09 00:00
Credits
offset
Show details on NVD website
To clipboard 

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CVE-2026-79659 (GCVE-0-2026-79659)

Vulnerability from cvelistv5 – Published: 2026-08-25 11:33 – Updated: 2026-08-25 13:03
VLAI
Title
Ech0 before 4.7.3 Server-Side Request Forgery via fetchPeerConnectInfo
Summary
Ech0 before 4.7.3 contains a server-side request forgery vulnerability in the fetchPeerConnectInfo function that uses unvalidated HTTP requests instead of safe request methods with URL validation. Authenticated attackers can supply arbitrary URLs to access internal services and cloud metadata endpoints by triggering connection health checks or peer connection operations.
Severity
8.3 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 13:02 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
lin-snow Ech0 Affected: 0 , < 4.7.3 (semver)
Unaffected: 4.7.3 (semver)
    cpe:2.3:a:ech0:ech0:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-05-03 00:00
Show details on NVD website
To clipboard 

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CVE-2026-78682 (GCVE-0-2026-78682)

Vulnerability from cvelistv5 – Published: 2026-08-25 01:30 – Updated: 2026-08-25 15:23
VLAI
Title
NLTK before 3.10.3 SSRF Protection Bypass via Proxy
Summary
NLTK before 3.10.3 contains a server-side request forgery vulnerability in nltk.pathsec.urlopen (and callers nltk.data.load, nltk.downloader.Downloader.index/download) when an HTTP proxy is configured. pathsec.urlopen validates the requested hostname locally, but proxy-handler inheritance disables the safe HTTP/HTTPS handlers so the actual fetch is performed by the proxy against a destination that is never re-validated. An attacker can supply a validated public URL that the proxy forwards to an internal loopback-only service, allowing disclosure of internal HTTP resources, loading of forged downloader indexes, and installation of attacker-chosen package content.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 15:23 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
nltk nltk Affected: 0 , < 3.10.3 (semver)
Unaffected: 3.10.3 (semver)
    cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-11 00:00
Credits
sondt99
Show details on NVD website
To clipboard 

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CVE-2026-78500 (GCVE-0-2026-78500)

Vulnerability from cvelistv5 – Published: 2026-08-27 23:26 – Updated: 2026-08-28 16:37
VLAI
Title
Dimension Blind SSRF via Database Test Connection Feature
Summary
A blind server-side request forgery (SSRF) vulnerability WatchGuard Dimension Database Server Test configuration allows an authenticated privileged attacker to enumerate exposed network services on adjacent network systems.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:36 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
WatchGuard Dimension Affected: 2.0 , < 2.3.1 (semver)
    cpe:2.3:a:watchguard:dimension:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Simone Paganessi (https://www.linkedin.com/in/simonepaganessi)
Show details on NVD website
To clipboard 

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CVE-2026-78499 (GCVE-0-2026-78499)

Vulnerability from cvelistv5 – Published: 2026-08-27 23:26 – Updated: 2026-08-28 15:56
VLAI
Title
Dimension SSRF via FTP Server Test Connection
Summary
A server-side request forgery (SSRF) vulnerability WatchGuard Dimension FTP Server Test configuration allows an authenticated privileged attacker to enumerate exposed network services on adjacent network systems.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 14:33 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
WatchGuard Dimension Affected: 2.0 , < 2.3.1 (semver)
    cpe:2.3:a:watchguard:dimension:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Simone Paganessi (https://www.linkedin.com/in/simonepaganessi)
Show details on NVD website
To clipboard 

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CVE-2026-78498 (GCVE-0-2026-78498)

Vulnerability from cvelistv5 – Published: 2026-08-27 23:26 – Updated: 2026-08-28 16:24
VLAI
Title
Dimension Server-Side Request Forgery via Email Server Test Settings
Summary
A server-side request forgery (SSRF) vulnerability WatchGuard Dimension Email Server Test configuration allows an authenticated privileged attacker to enumerate exposed network services on adjacent network systems.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:22 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
WatchGuard Dimension Affected: 2.0 , < 2.3.1 (semver)
    cpe:2.3:a:watchguard:dimension:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Simone Paganessi (https://www.linkedin.com/in/simonepaganessi)
Show details on NVD website
To clipboard 

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CVE-2026-78495 (GCVE-0-2026-78495)

Vulnerability from cvelistv5 – Published: 2026-08-27 23:26 – Updated: 2026-08-28 16:32
VLAI
Title
Dimension Server-Side Request Forgery via Remote Backup Connection Test
Summary
A server-side request forgery (SSRF) vulnerability WatchGuard Dimension Remote Backup Connection Test configuration allows an authenticated privileged attacker to enumerate exposed network services on adjacent network systems.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:32 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
WatchGuard Dimension Affected: 2.0 , < 2.3.1 (semver)
    cpe:2.3:a:watchguard:dimension:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Simone Paganessi (https://www.linkedin.com/in/simonepaganessi)
Show details on NVD website
To clipboard 

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No mitigation information available for this CWE.

CAPEC-664: Server Side Request Forgery

An adversary exploits improper input validation by submitting maliciously crafted input to a target application running on a server, with the goal of forcing the server to make a request either to itself, to web services running in the server’s internal network, or to external third parties. If successful, the adversary’s request will be made with the server’s privilege level, bypassing its authentication controls. This ultimately allows the adversary to access sensitive data, execute commands on the server’s network, and make external requests with the stolen identity of the server. Server Side Request Forgery attacks differ from Cross Site Request Forgery attacks in that they target the server itself, whereas CSRF attacks exploit an insecure user authentication mechanism to perform unauthorized actions on the user's behalf.

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