What’s Vulnerable › Vulnerabilities

CVE-2026-54544: Fireshare has unauthenticated SSRF via missing login_required on webhook test endpoints

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-15 · updated 2026-09-30
• Weakness: CWE-918

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.

Affected products

• ShaneIsrael fireshare: before 1.6.16

References

• https://github.com/ShaneIsrael/fireshare/commit/3d786848d2d27344d4cdecf1bd0d54294c6ca160
• https://github.com/ShaneIsrael/fireshare/security/advisories/GHSA-w7j7-gv7f-gj92
• https://github.com/ShaneIsrael/fireshare/security/advisories/GHSA-w7j7-gv7f-gj92

Get alerted when CVE-2026-54544 or the next vulnerability affects your stack