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TI-2026-55290 Aliases CVE-2026-79920

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

Priority MEDIUM 44CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00624 50th percentileScored 2026-11-07
Fix Fixed ajenti (ajenti): 2.2.16

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ajentiajentibefore 2.2.162.2.16Patch availableCNA
  • ajenti Vendorajenti Affected before 2.2.16 Fixed in 2.2.16 Patch available CNA

Remediation

  • Fix · CNA ajenti (ajenti) Fixed in 2.2.16

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-79920
  2. 2026-11-03 EPSS moved to the 50th–90th percentile

References

Other 4

  • TI-2019-15206 ajenti API privileges management CVSS 3.1HIGH 8.8
  • TI-2026-28991 Password bypass when 2FA is activated CVSS 4.0CRITICAL 9.3
  • TI-2026-22317 Ajenti has a potential Remote Code Execution CVSS 4.0HIGH 8.1
  • TI-2018-15737 Ajenti version version 2 contains a Cross ite Request Forgery (CSRF) vulnerability in the… CVSS 3.0HIGH 8.8
  • TI-2018-15779 Ajenti version 2 contains an Information Disclosure vulnerability in Line 176 of the code… CVSS 3.0HIGH 7.5
  • TI-2018-15736 Ajenti version version 2 contains a Input Validation vulnerability in ID string on… CVSS 3.0HIGH 7.5
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences