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CVE-2026-53804: OTRS Community Edition OS Command Injection via PGP Configuration

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-20 · updated 2026-10-18
• Weakness: CWE-78

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.

Affected products

• Centuran Consulting OTRS Community Edition: through 6.0.41

References

• https://h00die-gr3y.github.io/research/cve-2026-53804/
• https://www.vulncheck.com/advisories/otrs-community-edition-os-command-injection-via-pgp-configuration

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