CVE-2026-54337 Fireshare - Command Injection

Fireshare < 1.6.14 contains a command injection caused by improper sanitization of arguments in the video upload function, letting unauthenticated attackers write or overwrite system files remotely, exploit requires no authentication.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.63% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
File System Write, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-88

Vendor fix

Update to version 1.6.14 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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