Unauthenticated Path Traversal Arbitrary File Write in /api/uploadChunked/public_CVE-2026-34745

9.1 / 10

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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.

Basic Information

ID CVE-2026-34745

Source GitHub_M

Published Apr 2, 2026 at 18:38

Modified Apr 2, 2026 at 19:15

Affected Product

Vendor ShaneIsrael

Product fireshare

Version < 1.5.3

Affected Versions ShaneIsrael fireshare < 1.5.3

CWE Classification

CWE-22

References

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    "published": "2026-04-02T18:38:17.626Z",
    "modified": "2026-04-02T19:15:43.377Z",
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