CVE-2021-26921 Auth bypass in n/a
Disabled user accounts in Argo CD retain valid session tokens, allowing unauthorized access to the system.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-26921?
CVE-2021-26921 is a medium-severity authentication bypass vulnerability in Argoproj Argo Cd, published on 9 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In util/session/sessionmanager.go in Argo CD before 1.8.4, tokens continue to work even when the user account is disabled.
Weakness: CWE-613
Which versions are affected by CVE-2021-26921?
1 open source package ship an affected version, including argo-cd. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
argo-cd Bitnami | All versions | 1.7.12, 1.8.4 |
Products include Argoproj Argo Cd.
How do I fix CVE-2021-26921?
Upgrade argo-cd to a fixed version for your release line: 1.7.12 or 1.8.4.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-26921 being exploited?
There is no known exploitation of CVE-2021-26921 in the wild and no public exploit code.
Other vulnerabilities in Argoproj Argo Cd
- CVE-2025-55190 Argo CD: Project API Token Exposes Repository Credentials
- CVE-2022-29165 Argo CD will blindly trust JWT claims if anonymous access is enabled
- CVE-2023-40029 Cluster secret might leak in cluster details page in Argo CD
- CVE-2022-24768 Improper access control allows admin privilege escalation in Argo CD
- CVE-2024-21652 Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss
Sources
Also known as BIT-argo-cd-2021-26921, GHSA-9h6w-j7w4-jr52.