CVE-2026-54337 Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/Overwrite
Unauthenticated attackers can exploit argument injection in video uploads to write or overwrite system files, leading to potential code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54337?
CVE-2026-54337 is a critical command injection vulnerability in ShaneIsrael fireshare, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-88
Which versions are affected by CVE-2026-54337?
How do I fix CVE-2026-54337?
No fix has been published for CVE-2026-54337 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-54337 being exploited?
There is no known exploitation of CVE-2026-54337 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-hmh2-6g84-q8jx.