CVE-2021-23347 Cross-site Scripting (XSS)

What is CVE-2021-23347?

CVE-2021-23347 is a medium-severity cross-site scripting vulnerability in Argoproj Argo Cd, published on 3 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

The package github.com/argoproj/argo-cd/cmd before 1.7.13, from 1.8.0 and before 1.8.6 are vulnerable to Cross-site Scripting (XSS) the SSO provider connected to Argo CD would have to send back a malicious error message containing JavaScript to the user.

Weakness: CWE-79

Which versions are affected by CVE-2021-23347?

6 open source packages ship an affected version, including github.com/argoproj/argo-cd/v2, argo-cd and github.com/argoproj/argo-cd. It affects 1 product.

Products include Argoproj Argo Cd.

How do I fix CVE-2021-23347?

Upgrade github.com/argoproj/argo-cd/v2 to a fixed version for your release line: 1.7.13 or 1.8.6.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-23347 being exploited?

There is no known exploitation of CVE-2021-23347 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 Critical 10.0
• CVE-2022-29165 Argo CD will blindly trust JWT claims if anonymous access is enabled Critical 10.0
• CVE-2023-40029 Cluster secret might leak in cluster details page in Argo CD Critical 9.9
• CVE-2022-24768 Improper access control allows admin privilege escalation in Argo CD Critical 9.9
• CVE-2024-21652 Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss Critical 9.8

All Argoproj Argo Cd vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-argo-cd-2021-23347, GHSA-qq5v-f4c3-395c, GO-2022-0869, SNYK-GOLANG-GITHUBCOMARGOPROJARGOCDCMD-1078291.