Common Weakness Enumeration

CWE-918

Allowed

Server-Side Request Forgery (SSRF)

Abstraction: Base · Status: Incomplete

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.

4993 vulnerabilities reference this CWE, most recent first.

CVE-2026-53754 (GCVE-0-2026-53754)

Vulnerability from cvelistv5 – Published: 2026-06-23 18:16 – Updated: 2026-06-23 18:54
VLAI
Title
Crawl4AI: SSRF filter bypass in Docker server via IPv6 transition forms (NAT64 / 6to4 / unspecified / v4-mapped)
Summary
Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.8, the Docker API server's SSRF protection (validate_webhook_url / validate_url_destination in deploy/docker/utils.py) used an explicit IPv4/IPv6 CIDR blocklist that missed several address families. An attacker could reach internal services and cloud metadata endpoints (e.g. 169.254.169.254) despite the filter by encoding an internal IPv4 address inside an IPv6 transition form, or by using the IPv6 unspecified address. Because the Docker API is unauthenticated by default (jwt_enabled: false), no credentials are required. This vulnerability is fixed in 0.8.8.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
unclecode crawl4ai Affected: < 0.8.8
Create a notification for this product.
Show details on NVD website

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CVE-2026-53727 (GCVE-0-2026-53727)

Vulnerability from cvelistv5 – Published: 2026-07-17 20:30 – Updated: 2026-07-20 13:48
VLAI
Title
css_parser: SSRF and Local File Disclosure in `CssParser::Parser#read_remote_file`
Summary
css_parser is a Ruby CSS parser. From 2.2.0 until 3.0.0, CssParser::Parser#read_remote_file in lib/css_parser/parser.rb, and therefore load_uri! and the @import-following branch of add_block!, issued HTTP and HTTPS requests against any host, port, and URI without a scheme allowlist, host or IP filtering, or protection against link-local, loopback, or RFC-1918 addresses. Location: redirects were followed recursively back into the same function, which also serviced file:// URIs, so a single attacker-controlled HTTP redirect could upgrade the bug from SSRF to arbitrary local file disclosure. Any consumer of css_parser that hands it attacker-influenced CSS together with a base_uri: option is exposed. This issue is fixed in version 3.0.0.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Vendor Product Version
premailer css_parser Affected: < 3.0.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-53607 (GCVE-0-2026-53607)

Vulnerability from cvelistv5 – Published: 2026-06-12 20:54 – Updated: 2026-06-15 18:35
VLAI
Title
@apostrophecms/file pretty-URL Vulnerable to Unauthenticated SSRF via Host header
Summary
ApostropheCMS is an open-source Node.js content management system. In versions up to and including 4.30.0, when `prettyUrls: true` is enabled on `@apostrophecms/file` (a documented SEO feature for serving uploaded files at clean URLs), the public pretty-URL handler builds the upstream URL using the raw `Host` HTTP request header. That URL is then `fetch`'ed and the response body + headers are streamed straight back to the requester. Because `Host` is fully attacker-controlled, an unauthenticated remote attacker can pivot the apostrophe process to issue outbound HTTP requests against any host it can reach on the private network. The path component is constrained to `/uploads/attachments/<cuid>-<slug>.<ext>` (built from a local-DB lookup), which keeps the impact narrow: cross-instance data exfiltration is neutralized by cuid uniqueness, but blind-SSRF residuals remain (network-topology mapping via response-code / timing differences and verbose proxy/WAF 404 body disclosure). As of time of publication, no known patched versions exist.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
apostrophecms apostrophe Affected: <= 4.30.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-53513 (GCVE-0-2026-53513)

Vulnerability from cvelistv5 – Published: 2026-07-15 17:15 – Updated: 2026-07-15 19:29
VLAI
Title
Better Auth: Server-side request forgery via unvalidated OIDC endpoints on @better-auth/sso provider registration
Summary
Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the @better-auth/sso plugin's POST /sso/register and POST /sso/update-provider endpoints accept attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs when skipDiscovery: true is set, store them on the ssoProvider row without origin validation, and fetch them during OIDC callback, allowing non-blind server-side request forgery and possible account linking when trustEmailVerified: true is configured. This issue is fixed in version 1.6.11.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-20 - Improper Input Validation
  • CWE-345 - Insufficient Verification of Data Authenticity
  • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Vendor Product Version
better-auth better-auth Affected: >= 0.1.0, < 1.6.11
Create a notification for this product.
@better-auth sso Affected: >= 0.1.0, < 1.6.11
Create a notification for this product.
Show details on NVD website

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CVE-2026-53500 (GCVE-0-2026-53500)

Vulnerability from cvelistv5 – Published: 2026-07-31 18:35 – Updated: 2026-07-31 23:30
VLAI
Title
Thumbor treats ALLOWED_SOURCES string patterns as unescaped regex, allowing hostname bypass via wildcard dot
Summary
Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the ALLOWED_SOURCES configuration passes plain strings to re.match() without escaping dots, so a hostname differing at dot positions can match the allowlist. This issue is fixed in 7.8.0.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Vendor Product Version
thumbor thumbor Affected: < 7.8.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-53450 (GCVE-0-2026-53450)

Vulnerability from cvelistv5 – Published: 2026-07-10 18:05 – Updated: 2026-07-10 19:03
VLAI
Title
Coturn: IPv4-mapped 127.0.0.1 bypasses default loopback peer protection
Summary
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, coturn rejects loopback peers by default unless allow-loopback-peers is enabled, but the default loopback guard can be bypassed by using the IPv4-mapped IPv6 peer address ::ffff:127.0.0.1 in a TURN XOR-PEER-ADDRESS attribute. ioa_addr_is_loopback checks for the literal IPv6 loopback shape before IPv4-mapped IPv6 handling, so good_peer_addr does not apply the default loopback rejection and an authenticated TURN client can expose services bound only to localhost on the coturn host through TURN relay traffic. This issue is fixed in version 4.13.0.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
coturn coturn Affected: < 4.13.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-53446 (GCVE-0-2026-53446)

Vulnerability from cvelistv5 – Published: 2026-07-15 21:10 – Updated: 2026-07-16 12:49
VLAI
Title
Wekan: Server-Side Request Forgery (SSRF) via webhook integration URLs
Summary
Wekan is open source kanban built with Meteor. Prior to 9.32, Wekan webhook integration URLs in models/integrations.js are stored from user input and later fetched by server/notifications/outgoing.js without applying the existing validateAttachmentUrl() private-network checks from models/lib/attachmentUrlValidation.js. A board administrator can configure webhook URLs that cause server-side requests to internal or metadata services. This issue is fixed in version 9.32.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Vendor Product Version
wekan wekan Affected: < 9.32
Create a notification for this product.
Show details on NVD website

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CVE-2026-52840 (GCVE-0-2026-52840)

Vulnerability from cvelistv5 – Published: 2026-07-14 15:23 – Updated: 2026-07-15 13:53
VLAI
Title
Easy!Appointments has server-side request forgery in CalDAV connection test that exposes the deployment's internal network
Summary
Easy!Appointments is a self hosted appointment scheduler. In versions prior to 1.6.0, `Caldav::connect_to_server` at `application/controllers/Caldav.php:60` hands the request's `caldav_url` to a Guzzle `REPORT` call without scheme or host validation. A logged-in backend user (admin, provider, or secretary) reaches loopback, RFC1918, and link-local hosts on the deployment's network. The Guzzle exception path returns the upstream status code plus ~120 bytes of response body in the JSON `message` field (`Caldav.php:74-78`), so the SSRF is semi-blind. Version 1.6.0 contains a patch.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Show details on NVD website

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CVE-2026-52805 (GCVE-0-2026-52805)

Vulnerability from cvelistv5 – Published: 2026-06-24 20:22 – Updated: 2026-06-26 03:55
VLAI
Title
Gogs: Migration Redirect Bypass Leads to Internal Repository Theft
Summary
Gogs is an open source self-hosted Git service. Prior to 0.14.3, a Server-Side Request Forgery (SSRF) vulnerability exists in the repository migration functionality. The application validates only the initially submitted URL hostname, but git clone --mirror follows HTTP redirects. An authenticated user can submit a public URL that redirects to a blocked internal endpoint (e.g., 127.0.0.1), importing the internal repository's contents into an attacker-controlled repository. This vulnerability is fixed in 0.14.3.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Vendor Product Version
gogs gogs Affected: < 0.14.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-50552 (GCVE-0-2026-50552)

Vulnerability from cvelistv5 – Published: 2026-06-12 18:51 – Updated: 2026-06-15 15:25
VLAI
Title
Koel: Server-Side Request Forgery (SSRF) in radio station creation due to missing validation bail
Summary
Koel is a free, open-source music streaming solution. Prior to version 9.7.1, Koel contains a Server-Side Request Forgery (SSRF) vulnerability in the radio station creation endpoint (POST /api/radio/stations). The url field validation rules are declared without the bail keyword, so the HasAudioContentType rule — which issues HTTP requests to the supplied URL — still executes even after the SafeUrl rule has rejected the URL as pointing to a private/reserved address. Any authenticated, non-admin user can therefore coerce the server into making HEAD/GET requests to arbitrary internal hosts. This issue has been patched in version 9.7.1.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
koel koel Affected: < 9.7.1
Create a notification for this product.
Show details on NVD website

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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.