CVE-2026-34106 Guardian Language-System Unauthenticated OS Command Injection via id Parameter in subtitles.php
Unauthenticated attackers can execute arbitrary OS commands via the id parameter in subtitles.php due to unsanitized input in exec().
- 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-2026-34106?
CVE-2026-34106 is a critical command injection vulnerability in guardian language-system, published on 1 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Guardian language-system passes the id GET parameter directly into a PHP exec() call in subtitles.php (line 19) without sanitization: exec(\"php jobs/subtitle_rendering.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthenticated remote attacker can append shell metacharacters to the id parameter to execute arbitrary OS commands on the server.
Weakness: CWE-78
Which versions are affected by CVE-2026-34106?
How do I fix CVE-2026-34106?
No fix has been published for CVE-2026-34106 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-2026-34106 being exploited?
There is no known exploitation of CVE-2026-34106 in the wild and no public exploit code.
Sources
Also known as GHSA-hw82-rg7w-cx9p.