CVE-2026-53804

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.

CVSS 4.0

8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-25)

CWE

CWE-78

Published

2026-08-20

Modified

2026-10-18

Record from

the NVD, synced 2026-10-19

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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