CVE-2026-54544 Fireshare has unauthenticated SSRF via missing login_required on webhook test endpoints
Unauthenticated attackers can trigger server-side requests to internal networks via missing authentication on webhook test endpoints in Fireshare.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54544?
CVE-2026-54544 is a high-severity server-side request forgery vulnerability in ShaneIsrael fireshare, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Fireshare facilitates self-hosted media and link sharing. Prior to version 1.6.16, two API endpoints that trigger outbound HTTP requests are missing the @login_required decorator. An unauthenticated attacker can call POST /api/test-discord-webhook or POST /api/test-webhook and cause the Fireshare server to issue an arbitrary HTTP POST to any URL the attacker supplies, including internal network addresses and cloud metadata services. No credentials, session cookies, or prior access are required. Version 1.6.16 contains a patch.
Weakness: CWE-918
Which versions are affected by CVE-2026-54544?
How do I fix CVE-2026-54544?
No fix has been published for CVE-2026-54544 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-2026-54544 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54544 exists.
Sources
Also known as GHSA-w7j7-gv7f-gj92.