CVE-2026-54337 PUBLISHED

Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/Overwrite

Assigner: GitHub_M
Reserved: 12.06.2026 Published: 15.09.2026 Updated: 16.09.2026

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.

Metrics

CVSS 3.1

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

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	ShaneIsrael
Product	fireshare
Versions	Version < 1.6.14 is affected

References

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

Problem Types

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