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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45738
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-15 20:17:05 UTC
Updated2026-07-20 02:06:47 UTC
DescriptionArgo 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.

Risk And Classification

Primary CVSS: v3.1 8.7 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS: 0.003290000 probability, percentile 0.251560000 (date 2026-07-20)

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.7HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
3.1[email protected]Secondary7.3HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
3.1CNADECLARED7.3HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Argoproj Argo Cd All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Argoproj Argo-cd affected < 3.2.12 Not specified
CNA Argoproj Argo-cd affected >= 3.3.0, < 3.3.10 Not specified
CNA Argoproj Argo-cd affected >= 3.4.0-rc1, < 3.4.2 Not specified

References

ReferenceSourceLinkTags
github.com/argoproj/argo-cd/releases/tag/v3.2.12 [email protected] github.com Release Notes
github.com/argoproj/argo-cd/releases/tag/v3.4.2 [email protected] github.com Release Notes
github.com/argoproj/argo-cd/commit/35ea43c537d6e8948e67f347317fc4f88b325122 [email protected] github.com Patch
github.com/argoproj/argo-cd/commit/00f83c41dcfd879f34f8e0248c860d704b41cf0f [email protected] github.com Patch
github.com/argoproj/argo-cd/security/advisories/GHSA-h98r-wv3h-fr38 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Exploit, Vendor Advisory
github.com/argoproj/argo-cd/releases/tag/v3.3.10 [email protected] github.com Release Notes
github.com/argoproj/argo-cd/commit/c8df5ff7acc403adcee1256da5d87081cd52f0a6 [email protected] github.com Patch
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