CVE-2026-34745: fallo crítico en ShaneIsrael fireshare
Unauthenticated Path Traversal Arbitrary File Write in /api/uploadChunked/public
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.1epss 0.6%
Fireshare facilitates self-hosted media and link sharing. Prior to version 1.5.3, the fix for CVE-2026-33645 was applied to the authenticated /api/uploadChunked endpoint but was not applied to the unauthenticated /api/uploadChunked/public endpoint in the same file (app/server/fireshare/api.py). An unauthenticated attacker can exploit the checkSum parameter to write arbitrary files with attacker-controlled content to any writable path on the server filesystem. This issue has been patched in version 1.5.3.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Productos afectados
ShaneIsrael · fireshareCVEs relacionadas — ShaneIsrael fireshare
En el mismo producto, de las más peligrosas a las menos.
CVE-2025-67728CRITICALFireshare Public Uploads feature is vulnerable to OS Command Injection (RCE)EPSS 0.7%CVE-2026-54337CRITICALFireshare has Unauthenticated Argument Injection to Arbitrary File Write/OverwriteEPSS 0.6%CVE-2026-33645HIGHFireshare has Path Traversal Arbitrary File Write in `/api/uploadChunked`EPSS 0.4%CVE-2026-54544HIGHFireshare has unauthenticated SSRF via missing login_required on webhook test endpointsEPSS 0.4%