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TI-2026-31086 Aliases CVE-2026-42880GHSA-3v3m-wc6v-x4x3

ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction

Priority HIGH 76CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 2 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-200.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00645 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial argo-cd (argoproj): 3.2.11, 3.3.9github.com/argoproj/argo-cd/v3 (Go): 3.2.11, 3.3.9Red Hat: 2 advisoriesRed Hat: 2 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
argoprojargo-cd3.2.0 to before 3.2.11; 3.3.0 to before 3.3.93.2.11, 3.3.9Patch availableCNA
—github.com/argoproj/argo-cd/v3 (Go)3.2.0 to before 3.2.113.2.11Patch availableGHSA-3v3m-wc6v-x4x3
—github.com/argoproj/argo-cd/v3 (Go)3.3.0 to before 3.3.93.3.9Patch availableGHSA-3v3m-wc6v-x4x3
  • argo-cd Vendorargoproj Affected 3.2.0 to before 3.2.11; 3.3.0 to before 3.3.9 Fixed in 3.2.11, 3.3.9 Patch available CNA
  • github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.2.0 to before 3.2.11 Fixed in 3.2.11 Patch available GHSA-3v3m-wc6v-x4x3
  • github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.3.0 to before 3.3.9 Fixed in 3.3.9 Patch available GHSA-3v3m-wc6v-x4x3

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*3.2.0 to before 3.2.11; 3.3.0 to before 3.3.9Vulnerableargoproj
  • cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:* Versions 3.2.0 to before 3.2.11; 3.3.0 to before 3.3.9 Vulnerable ·argoproj

Remediation

  • Fix · CNA argo-cd (argoproj) Fixed in 3.2.11, 3.3.9
  • Fix · GHSA-3v3m-wc6v-x4x3 github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.2.11 Advisory →
  • Fix · GHSA-3v3m-wc6v-x4x3 github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.3.9 Advisory →

Red Hat 2 advisories

  • RHSA-2026:20947 Released 2026-05-26 · Red Hat rating Important
    Red Hat OpenShift GitOps v1.20.4 security update
    • Red Hat OpenShift GitOps 1.20 registry.redhat.io/openshift-gitops-1/argocd-agent-rhel9, registry.redhat.io/openshift-gitops-1/argocd-image-updater-rhel9, registry.redhat.io/openshift-gitops-1/dex-rhel9 +1
  • RHSA-2026:20943 Released 2026-05-26 · Red Hat rating Important
    Red Hat OpenShift GitOps v1.19.4 security update
    • Red Hat OpenShift GitOps 1.19 registry.redhat.io/openshift-gitops-1/argocd-image-updater-rhel8, registry.redhat.io/openshift-gitops-1/console-plugin-rhel8, registry.redhat.io/openshift-gitops-1/dex-rhel8 +1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Openshift Data Foundation 4AffectedNo fix yet
Red Hat OpenShift GitOps 1.19Fixed RHSA-2026:20943
Red Hat OpenShift GitOps 1.20Fixed RHSA-2026:20947
Not affected: 3 products
  • Red Hat OpenShift GitOps
  • Red Hat OpenShift GitOps 1.19
  • Red Hat OpenShift GitOps 1.20

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42880
  2. 2026-10-03 Alias added: GHSA-3v3m-wc6v-x4x3
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Exploit 1

Advisory 1

Other 1

  • TI-2024-14377 Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss CVSS 3.1CRITICAL 9.8
  • TI-2024-14383 Argo CD vulnerable to Bypassing of Rate Limit and Brute Force Protection Using Cache Overflow CVSS 3.1CRITICAL 9.1
  • TI-2023-20919 Cluster secret might leak in cluster details page in Argo CD CVSS 3.1CRITICAL 9.9
  • TI-2024-21088 ArgoCD Vulnerable to Use of Risky or Missing Cryptographic Algorithms in Redis Cache CVSS 3.1CRITICAL 9.1
  • TI-2026-33475 Argo CD: Stored XSS in application link annotations enables developer-to-admin privilege escalation CVSS 3.1HIGH 8.7
  • TI-2025-37068 Argo CD is Vulnerable to Unauthenticated Remote DoS via malformed Azure DevOps git.push webhook CVSS 3.1HIGH 7.5
See all 56 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences