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Vulnerability record · CVE-2026-79920 · published 21 September 2026

CVE-2026-79920: Missing authorization vulnerability

Ajenti is a Linux & BSD modular server admin panel. Prior to version 2.2.16, any authenticated user can call /api/core/tasks/start to enqueue InstallPlugin, UnInstallPlugin, or UpgradeAll from plugins/plugins/tasks.py without plugin-management authorization. InstallPlugin and UnInstallPlugin construct a pip package specification from unvalidated name and version fields, and the task worker invokes pip while running as root. A low-privileged user can therefore select or manipulate a package installed with root privileges and can install, remove, or upgrade plugins without administrative permission, resulting in root code execution and full host compromise. This issue is fixed in version 2.2.16.

9.9 CVSS 3.1 Critical EPSS 0.62% · top 52.1% CWE-862 · Missing authorization Deferred
9.9CVSS 3.1 base score
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
24 Sep 2026Last modified by NVD

Description

Ajenti is a Linux & BSD modular server admin panel. Prior to version 2.2.16, any authenticated user can call /api/core/tasks/start to enqueue InstallPlugin, UnInstallPlugin, or UpgradeAll from plugins/plugins/tasks.py without plugin-management authorization. InstallPlugin and UnInstallPlugin construct a pip package specification from unvalidated name and version fields, and the task worker invokes pip while running as root. A low-privileged user can therefore select or manipulate a package installed with root privileges and can install, remove, or upgrade plugins without administrative permission, resulting in root code execution and full host compromise. This issue is fixed in version 2.2.16.

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

References

LinkTags
https://github.com/ajenti/ajenti/commit/3a8cbee32df4c5033796f19af4210011163a6f6e
https://github.com/ajenti/ajenti/commit/f07f02e0cdeeb3e528c1d5af28e27fd11623c49c
https://github.com/ajenti/ajenti/releases/tag/v2.2.16
https://github.com/ajenti/ajenti/security/advisories/GHSA-j8xf-5fw2-f99q

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Source: NIST National Vulnerability Database (record CVE-2026-79920), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.