CVE-2025-67728: Fireshare Public Uploads feature is vulnerable to OS Command Injection (RCE)

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-12 · updated 2026-10-07
Weakness: CWE-77

Description

Fireshare facilitates self-hosted media and link sharing. Versions 1.2.30 and below allow an authenticated user, or unauthenticated user if the Public Uploads setting is enabled, to craft a malicious filename when uploading a video file. The malicious filename is then concatenated directly into a shell command, which can be used for uploading files to arbitrary directories via path traversal, or executing system commands for Remote Code Execution (RCE). This issue is fixed in version 1.3.0.

Affected products

ShaneIsrael fireshare: before 1.3.0 — fixed in 1.3.0

How to fix

Upgrade to a fixed version: ShaneIsrael fireshare 1.3.0. Check the vendor advisory for mitigations.

References

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