CVE-2026-53804 OTRS Community Edition OS Command Injection via PGP Configuration
Administrators can execute arbitrary OS commands via unsanitized PGP configuration values in OTRS Community Edition.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-53804?
CVE-2026-53804 is a high-severity command injection vulnerability in Centuran Consulting OTRS Community Edition, published on 20 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
OTRS Community Edition contains an authenticated OS command injection vulnerability in the PGP encryption module that allows administrators to execute arbitrary operating-system commands by supplying crafted values for the PGP binary path and command options. Administrator-supplied configuration values are concatenated without sanitization into a shell command, enabling arbitrary command execution as the web server process user during normal ticket operations after the malicious configuration is deployed.
Weakness: CWE-78
Which versions are affected by CVE-2026-53804?
How do I fix CVE-2026-53804?
No fix has been published for CVE-2026-53804 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-2026-53804 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53804 exists.
Sources
Also known as GHSA-97wp-8phr-mg6x.