What’s Vulnerable › Vulnerabilities

CVE-2021-26924

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-15 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue was discovered in Argo CD before 1.8.4. Browser XSS protection is not activated due to the missing XSS protection header.

Affected products

• argoproj argo-cd: before 1.7.12; from 1.8.0 before 1.8.4 — fixed in 1.7.12, 1.8.4

How to fix

Upgrade to a fixed version: argoproj argo-cd 1.7.12, 1.8.4. Check the vendor advisory for mitigations.

References

• https://github.com/argoproj/argo-cd/compare/v1.8.3...v1.8.4
• https://github.com/argoproj/argo-cd/security/advisories/GHSA-pg99-h5gc-446r
• https://github.com/argoproj/argo-cd/compare/v1.8.3...v1.8.4
• https://github.com/argoproj/argo-cd/security/advisories/GHSA-pg99-h5gc-446r

Get alerted when CVE-2021-26924 or the next vulnerability affects your stack