CVE-2026-54337CWE-88

CVE-2026-54337

Critical · published September 16, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
49.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00632 · 49.7th percentile
Weakness
CWE-88 · Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Published
2026-09-16T01:16Z
References (1)
https://github.com/ShaneIsrael/fireshare/security/advisories/GHSA-hmh2-6g84-q8jx · [email protected]
EPSS history
Timeline
  • 17 SEP 03:31Z
    EPSS moved — → 0%
    epss
  • 15 SEP 20:22Z
    Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/Overwrite
    cvelistv5