CVE-2026-42880GHSA-3V3M-WC6V-X4X3BIT-ARGO-CD-2026-42880GO-2026-5099
ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 3.2.11, 3.3.9
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 1 proof of concept on GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: poc
- Automatable: no
- Technical impact: total
Summary
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to before 3.3.9, there is a missing authorization and data-masking gap in Argo CD's ServerSideDiff endpoint that allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server's Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: poc · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- argoproj argo-cd
From 3.2.0 · fixed in 3.2.11; From 3.3.0 · fixed in 3.3.9
- github.com/argoproj/argo-cd/v3Go
From 3.2.0 · fixed in 3.2.11
- github.com/argoproj/argo-cd/v3Go
From 3.3.0 · fixed in 3.3.9
- github.com/argoproj/argo-cdGo
All versions
- github.com/argoproj/argo-cd/v2Go
All versions
- github.com/argoproj/argo-cd/v3Go
From 3.2.0 · fixed in 3.2.11; From 3.3.0 · fixed in 3.3.9