🛡️ CVE-2026-34745
🔴 CVSS 9.1 — Critical ⚠️ Exploit Public CWE-22 NVD
9.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity CRITICAL
CVSS Score 9.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE CWE-22
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-02
Updated 2026-06-02
Modified 2026-04-03

Affected Packages

Software From version Fixed in
fireshare — 1.5.3

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