Vulnerability details

CVE-2026-54337

ShaneIsrael fireshare

Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/Overwrite

CVSS 3.1

9.8Critical

Official 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.

CVSS scores

Score	Version	Source	Vector
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
ShaneIsrael	fireshare	< 1.6.14	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2026-09-15
Last updated: 2026-09-16
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.63%

Probability of exploitation in 30 days

50.5%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

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