CVE-2026-79920

CRITICAL 9.9

Ajenti: Privilege escalation to root via unauthenticated/unauthorized plugin install task

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	ajenti
Product	ajenti
Published	Sep 21, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

ajenti / ajenti

< 2.2.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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