CVE-2026-44313

LinkWarden: Server-Side Request Forgery (SSRF) in Link Creation via fetchTitleAndHeaders Function

State: Published
Severity: 9.1 Critical
Published: May 8, 2026
Updated: May 11, 2026
Reserved: May 5, 2026

Description

Linkwarden is a self-hosted, open-source collaborative bookmark manager to collect, organize and archive webpages. Prior to version 2.13.0, a Server-Side Request Forgery (SSRF) vulnerability in the fetchTitleAndHeaders function allows authenticated users to make arbitrary HTTP requests to internal services due to insufficient URL validation that only checks for "http://" or "https://" prefixes. This issue has been patched in version 2.13.0.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L	GitHub_M

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
linkwardenlinkwarden	< 2.13.0Affected

References

https://github.com/linkwarden/linkwarden/security/advisories/GHSA-5qpc-x7rv-hvmp

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