What is CVE-2026-40177?

CVE-2026-40177 is a high-severity vulnerability in Ajenti, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-04-10.

How severe is CVE-2026-40177?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Ajenti

CVE-2026-40177

ajenti.plugin.core defines all necessary core elements to allow Ajenti to run properly. Prior to 0.112, if the 2FA was activated, it was possible to bypass the password authentication This vulnerability is fixed in 0.112.

Vulnerability class: Broken Authentication

Published 2026-04-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (36.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Ajenti — versions < 0.112
Ajenti Plugin Core

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

github.com/ajenti/ajenti/security/advisories/GHSA-3mcx-6wxm-qr8v (Vendor Advisory)

Frequently asked questions

What is CVE-2026-40177?: CVE-2026-40177 is a high-severity vulnerability in Ajenti, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-04-10.
How severe is CVE-2026-40177?: High severity. CVSS v3 base score is 7.5 out of 10.