CVE-2026-54337

Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/Overwrite

Fireshare facilitates self-hosted media and link sharing. Prior to version 1.6.14, an argument Injection in the video upload function allows unauthenticated attacker to write/overwrite system files. Version 1.6.14 fixes the issue.

Affected

ShaneIsrael · fireshare

CVSS v3.1 GITHUB

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

EPSS

0.63% chance of exploitation in the next 30 days, 49th percentile

Published

2026-09-15

Updated

2026-09-16

Proof-of-concept exploits (1)

• 4qu4r1um/CVE-2026-54337-PoC0★ · 2026-06-20

References

• CVE Record
• NVD entry

Related

• CVE-2026-55494