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CVE-2026-42880

ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction

Published: May 7, 2026Updated: May 11, 2026 Sources: CVE List NVD BDUCWE-200
9.6CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 70.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-200CWE-212

Affected Products

argo cdargoproj
On-premDev Tool
Cloud & SaaS / container-orchestration
Argo CDThe Linux Foundation
On-premDev Tool
Cloud & SaaS / container-orchestration
argo-cdargoproj
On-premDev Tool
Cloud & SaaS / container-orchestration
argoprojoss-projectCloud & SaaSaka argo cd, argo-cd, argo workflows, argo workflow
the linux foundationoss-projectUSCloud & SaaSaka linuxfoundation.org, linux foundation

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3
github.com

Timeline

Published
May 7, 2026
Last Updated
May 11, 2026

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