SSRF in Shaneisrael Fireshare

CVE-2026-54544

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-54544?
CVE-2026-54544 is a high-severity vulnerability in Shaneisrael Fireshare, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.2/10. Published 2026-09-15.
How severe is CVE-2026-54544?
High severity. CVSS v3 base score is 7.2 out of 10.