CVE-2026-61898

The Ubuntu-specific language helper scripts (save-to-pam-env, update-langlist) shipped with accountsservice before 23.13.9-8ubuntu7 treat the user-controlled LANGUAGE entry in ~/.pam_environment as trusted input. The value is interpolated unescaped into a GNU sed replacement expression, allowing an attacker to inject a sed 'e' flag and arbitrary shell commands that execute with the privileges of the AccountsService helper process (real UID 0) via the SetLanguage D-Bus method.

Score
CVSS 3.1 7.8 High
Status
Awaiting Analysis - security@ubuntu.com
Published
2026-08-20
Last modified
2026-10-18
Weaknesses
CWE-78

Affected products

References

 
 
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