Vulnerability · Published Jul 15, 2026 · Assigned by GitHub_M
CVE-2026-45738Argo CD: Stored XSS in application link annotations enables developer-to-admin privilege escalation
High 7.3
In plain English
A high-severity cross-site scripting in argo-cd from argoproj. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/argoproj/argo-cd | no fix listed | GHSA-h98r-wv3h-fr38 |
| Go | github.com/argoproj/argo-cd | no fix listed | GO-2026-5418 |
| Go | github.com/argoproj/argo-cd/v2 | no fix listed | GO-2026-5418 |
| Go | github.com/argoproj/argo-cd/v2 | no fix listed | GHSA-h98r-wv3h-fr38 |
| Go | github.com/argoproj/argo-cd/v3 | 3.2.12, 3.3.10, 3.4.2 | GO-2026-5418 |
| Go | github.com/argoproj/argo-cd/v3 | 3.3.10 | GHSA-h98r-wv3h-fr38 |
| Go | github.com/argoproj/argo-cd/v3 | 3.4.2 | GHSA-h98r-wv3h-fr38 |
| Go | github.com/argoproj/argo-cd/v3 | 3.2.12 | GHSA-h98r-wv3h-fr38 |
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
References
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-h98r-wv3h-fr38 x_refsource_CONFIRM
- https://github.com/argoproj/argo-cd/commit/00f83c41dcfd879f34f8e0248c860d704b41cf0f x_refsource_MISC
- https://github.com/argoproj/argo-cd/commit/35ea43c537d6e8948e67f347317fc4f88b325122 x_refsource_MISC
- https://github.com/argoproj/argo-cd/commit/c8df5ff7acc403adcee1256da5d87081cd52f0a6 x_refsource_MISC
- https://github.com/argoproj/argo-cd/releases/tag/v3.2.12 x_refsource_MISC
- https://github.com/argoproj/argo-cd/releases/tag/v3.3.10 x_refsource_MISC
- https://github.com/argoproj/argo-cd/releases/tag/v3.4.2 x_refsource_MISC