CVE-2026-45738Argo CD: Stored XSS in application link annotations enables developer-to-admin privilege escalation

Description

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to 3.2.12, 3.3.10, and 3.4.2, Argo CD users with application write access can set link.argocd.argoproj.io/* annotations whose pipe-separated values are rendered by ui/src/app/applications/components/application-summary/application-summary.tsx in the Summary tab URLs section as anchor href values without URL validation, allowing javascript: execution in a higher-privileged user's authenticated Argo CD origin session. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/argoproj/argo-cd/security/advisories/GHSA-h98r-wv3h-fr38 ExploitVendor Advisory
• https://github.com/argoproj/argo-cd/commit/00f83c41dcfd879f34f8e0248c860d704b41cf0f Patch
• https://github.com/argoproj/argo-cd/commit/35ea43c537d6e8948e67f347317fc4f88b325122 Patch
• https://github.com/argoproj/argo-cd/commit/c8df5ff7acc403adcee1256da5d87081cd52f0a6 Patch
• https://github.com/argoproj/argo-cd/releases/tag/v3.2.12 Release Notes
• https://github.com/argoproj/argo-cd/releases/tag/v3.3.10 Release Notes
• https://github.com/argoproj/argo-cd/releases/tag/v3.4.2 Release Notes