CVE-2026-40177 Password bypass when 2FA is activated
Attackers can bypass password authentication when two-factor authentication is enabled, allowing unauthorized access to the Ajenti web panel.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-40177?
CVE-2026-40177 is a critical authentication bypass vulnerability in ajenti, published on 10 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-287
Which versions are affected by CVE-2026-40177?
3 open source packages ship an affected version, including ajenti-plugin-core and ajenti.plugin.core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ajenti-plugin-core PyPI | All versions | 0.112 |
ajenti-plugin-core PyPI | All versions | 0.112 |
ajenti.plugin.core PyPI | All versions | 0.112 |
Products include Ajenti Ajenti Plugin Core.
How do I fix CVE-2026-40177?
Upgrade ajenti-plugin-core to 0.112 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-40177 being exploited?
There is no known exploitation of CVE-2026-40177 in the wild and no public exploit code.
Other vulnerabilities in ajenti
Sources
Also known as GHSA-3mcx-6wxm-qr8v, PYSEC-2026-266.