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CVE-2026-34745

Unauthenticated Path Traversal Arbitrary File Write in /api/uploadChunked/public PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
ShaneIsrael / fireshareaffected < 1.5.3

CWE

CWE-22

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.