CVE-2026-44313 LinkWarden: Server-Side Request Forgery (SSRF) in Link Creation via fetchTitleAndHeaders Function
Authenticated users can exploit insufficient URL validation to perform Server-Side Request Forgery against internal services.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-44313?
CVE-2026-44313 is a critical server-side request forgery vulnerability in linkwarden, published on 8 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-44313?
How do I fix CVE-2026-44313?
No fix has been published for CVE-2026-44313 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-44313 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44313 exists.
Sources
Also known as GHSA-5qpc-x7rv-hvmp.