CVE-2026-54337

Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/Overwrite

State: Published
Severity: 9.8 Critical
Published: Sep 15, 2026
Updated: Sep 16, 2026
Reserved: Jun 12, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Affected Products

Product	Versions
fireshareShaneIsrael	< 1.6.14Affected

References

https://github.com/ShaneIsrael/fireshare/security/advisories/GHSA-hmh2-6g84-q8jx

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