CWE-918

Server-Side Request Forgery (SSRF)

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.

CVE-2026-42398 (GCVE-0-2026-42398)

Vulnerability from cvelistv5 – Published: 2026-05-28 19:47 – Updated: 2026-05-29 16:47
VLAI
Title
Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
Summary
Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted target, an attacker can cause Kibana to issue outbound requests to destinations that the egress restriction controls were intended to block.
Severity
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none 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
Elastic Kibana Affected: 9.3.0 , ≤ 9.3.1 (semver)
Affected: 9.0.0 , ≤ 9.2.7 (semver)
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CVE-2026-42404 (GCVE-0-2026-42404)

Vulnerability from cvelistv5 – Published: 2026-05-01 09:46 – Updated: 2026-05-01 16:21
VLAI
Title
Apache Neethi: Unrestricted HTTP Redirect Following in Policy References
Summary
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Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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
Apache Software Foundation Apache Neethi Affected: 0 , < 3.2.2 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-42430 (GCVE-0-2026-42430)

Vulnerability from cvelistv5 – Published: 2026-04-28 18:10 – Updated: 2026-04-30 12:56 X_Open Source
VLAI
Title
OpenClaw < 2026.4.8 - Strict Browser SSRF Bypass via Playwright Redirect Handling
Summary
OpenClaw before 2026.4.8 contains a server-side request forgery vulnerability in Playwright redirect handling that allows attackers to bypass strict SSRF checks. Attackers can exploit request-time navigation to reach private targets that should be restricted by browser SSRF protections.
Severity
4.8 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
SSVC
Exploitation: none 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
OpenClaw OpenClaw Affected: 0 , < 2026.4.8 (semver)
Unaffected: 2026.4.8 (semver)
Create a notification for this product.
Date Public
2026-04-08 00:00
Credits
smaeljaish771 KeenSecurityLab
Show details on NVD website
To clipboard 

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CVE-2026-42449 (GCVE-0-2026-42449)

Vulnerability from cvelistv5 – Published: 2026-05-07 20:46 – Updated: 2026-05-08 14:15
VLAI
Title
n8n-MCP: IPv4-mapped IPv6 addresses bypass SSRF protection in validateUrlSync(), enabling full SSRF for SDK embedders
Summary
n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. In versions 2.47.4 through 2.47.13, the SDK embedder path (N8NDocumentationMCPServer constructor, getN8nApiClient(), and validateInstanceContext()), the synchronous URL validator in SSRFProtection.validateUrlSync() had no IPv6 checks. IPv4-mapped IPv6 addresses such as http://[::ffff:169.254.169.254] bypassed the cloud-metadata, localhost, and private-IP range checks. An attacker able to supply an n8nApiUrl value could cause the server to issue HTTP requests to cloud metadata endpoints, RFC1918 private networks, or localhost services. Response bodies are returned to the caller (non-blind SSRF), and the n8nApiKey is forwarded in the x-n8n-api-key header to the attacker-controlled target. Projects with deployments embedding n8n-mcp as an SDK using N8NDocumentationMCPServer or N8NMCPEngine with user-supplied InstanceContext are affected. The first-party HTTP server deployment was not primarily affected — it has a second async validator (validateWebhookUrl) that catches IPv6 addresses. This issue has been fixed in version 2.47.14. If users are unable to upgrade immediately as a workaround they can validate URLs before passing to the SDK, restrict egress at the network layer, and reject user-controlled n8nApiUrl values.
Severity
8.5 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
SSVC
Exploitation: none 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
czlonkowski n8n-mcp Affected: >= 2.47.4, < 2.47.14
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42591 (GCVE-0-2026-42591)

Vulnerability from cvelistv5 – Published: 2026-05-14 15:20 – Updated: 2026-05-14 18:07
VLAI
Title
Gotenberg: Server-Side Request Forgery (SSRF) in github.com/gotenberg/gotenberg/v8
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the LibreOffice conversion endpoint (/forms/libreoffice/convert) passes uploaded documents directly to LibreOffice without inspecting their content. LibreOffice then fetches any embedded external URLs on its own, completely bypassing the SSRF filters. This vulnerability is fixed in 8.32.0.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc 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
gotenberg gotenberg Affected: < 8.32.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42592 (GCVE-0-2026-42592)

Vulnerability from cvelistv5 – Published: 2026-05-14 15:30 – Updated: 2026-05-14 18:14
VLAI
Title
Gotenberg: DNS rebinding bypasses SSRF validation on Chromium URL conversion routes
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, FilterOutboundURL resolves the hostname, checks the resolved IPs against the private-address deny-list, and returns only the error. It discards the resolved addresses. Chromium later performs its own DNS resolution when it navigates to the URL. An attacker who controls DNS for a hostname with a short TTL returns a public IP on the first query (Gotenberg allows) and a private IP on the second query (Chromium connects to the attacker-chosen internal address). The CDP Fetch.requestPaused handler re-checks the URL but runs its own DNS resolution, leaving a timing window before Chromium's actual TCP connect. The rendered internal service response returns to the caller as a PDF. This vulnerability is fixed in 8.32.0.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
gotenberg gotenberg Affected: < 8.32.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42595 (GCVE-0-2026-42595)

Vulnerability from cvelistv5 – Published: 2026-05-14 15:33 – Updated: 2026-05-14 18:56
VLAI
Title
Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-List Bypass
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, Gotenberg's Chromium URL-to-PDF endpoint (/forms/chromium/convert/url) has no default protection against HTTP/HTTPS-based SSRF. The default deny-list regex only blocks file:// URIs. An unauthenticated attacker can point Chromium at any internal IP — including loopback, RFC 1918 ranges, and cloud metadata endpoints — and receive the response rendered as a PDF. Additionally, even when operators configure a custom deny-list, the protection is bypassed via HTTP redirects. Gotenberg's Chromium instance follows 302 redirects from an attacker-controlled external URL to internal targets without re-validating the redirect destination against the deny-list. This vulnerability is fixed in 8.32.0.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: poc 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
gotenberg gotenberg Affected: < 8.32.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42596 (GCVE-0-2026-42596)

Vulnerability from cvelistv5 – Published: 2026-05-14 15:19 – Updated: 2026-05-15 16:04
VLAI
Title
Gotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker can supply URLs such as http://[::ffff:127.0.0.1]:... and reach loopback or private HTTP services that the default deny-list is intended to block. This crosses a real security boundary because an external caller can force the server to make outbound requests to internal-only targets. This vulnerability is fixed in 8.31.0.
Severity
9.4 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
SSVC
Exploitation: poc 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
gotenberg gotenberg Affected: < 8.31.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42597 (GCVE-0-2026-42597)

Vulnerability from cvelistv5 – Published: 2026-05-14 15:34 – Updated: 2026-05-14 18:04
VLAI
Title
Gotenberg: Chromium URL conversion routes read arbitrary files under /tmp via file:// scheme
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the /forms/chromium/convert/url and /forms/chromium/screenshot/url routes accept url=file:///tmp/... from anonymous callers. The default Chromium deny-list intentionally exempts file:///tmp/ so HTML/Markdown routes can load their own request-local assets, and those routes apply a per-request AllowedFilePrefixes guard to scope the read. The URL routes never set AllowedFilePrefixes, so the scope guard silently skips. Alice enumerates /tmp/, walks Gotenberg's per-request working directories, and reads the raw source files of other in-flight conversions as rendered PDF output. This vulnerability is fixed in 8.32.0.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-73 - External Control of File Name or Path
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
gotenberg gotenberg Affected: < 8.32.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42641 (GCVE-0-2026-42641)

Vulnerability from cvelistv5 – Published: 2026-04-29 10:40 – Updated: 2026-05-12 11:03
VLAI
Title
WordPress Share This Image plugin <= 2.14 - Server Side Request Forgery (SSRF) vulnerability
Summary
Server-Side Request Forgery (SSRF) vulnerability in ILLID Share This Image share-this-image allows Server Side Request Forgery.This issue affects Share This Image: from n/a through <= 2.14.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none 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
ILLID Share This Image Affected: 0 , ≤ 2.14 (custom)
Create a notification for this product.
Date Public
2026-04-29 12:46
Credits
권민성 | Patchstack Bug Bounty Program
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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