argo-cd is vulnerable to unauthenticated DoS attack via malformed Gogs webhook payload
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 3 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-476.
Summary
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Versions 1.2.0 through 1.8.7, 2.0.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.7 and 3.0.18 are vulnerable to malicious API requests which can crash the API server and cause denial of service to legitimate clients. With the default configuration, no webhook.gogs.secret set, Argo CD’s /api/webhook endpoint will crash the entire argocd-server process when it receives a Gogs push event whose JSON field commits[].repo is not set or is null. This issue is fixed in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| argoproj | argo-cd | 1.2.0 – 1.8.7; 2.0.0-rc1 to before 2.14.20; 3.2.0-rc1 to before 3.2.0-rc2; 3.1.0-rc1 to before 3.1.8; 3.0.0-rc1 to before 3.0.19 | 2.14.20, 3.2.0-rc2, 3.1.8, 3.0.19 | Patch available | CNA |
| — | github.com/argoproj/argo-cd (Go) | 1.2.0 – 1.8.7 | — | No fix listed | GHSA-wp4p-9pxh-cgx2 |
| — | github.com/argoproj/argo-cd/v2 (Go) | 2.0.0-rc1 to before 2.14.20 | 2.14.20 | Patch available | GHSA-wp4p-9pxh-cgx2 |
| — | github.com/argoproj/argo-cd/v3 (Go) | 3.2.0-rc1 to before 3.2.0-rc2 | 3.2.0-rc2 | Patch available | GHSA-wp4p-9pxh-cgx2 |
| — | github.com/argoproj/argo-cd/v3 (Go) | 3.1.0-rc1 to before 3.1.8 | 3.1.8 | Patch available | GHSA-wp4p-9pxh-cgx2 |
| — | github.com/argoproj/argo-cd/v3 (Go) | 3.0.0-rc1 to before 3.0.19 | 3.0.19 | Patch available | GHSA-wp4p-9pxh-cgx2 |
- argo-cd Vendorargoproj Affected 1.2.0 – 1.8.7; 2.0.0-rc1 to before 2.14.20; 3.2.0-rc1 to before 3.2.0-rc2; 3.1.0-rc1 to before 3.1.8; 3.0.0-rc1 to before 3.0.19 Fixed in 2.14.20, 3.2.0-rc2, 3.1.8, 3.0.19 Patch available CNA
- github.com/argoproj/argo-cd (Go) Vendor— Affected 1.2.0 – 1.8.7 Fixed in — No fix listed GHSA-wp4p-9pxh-cgx2
- github.com/argoproj/argo-cd/v2 (Go) Vendor— Affected 2.0.0-rc1 to before 2.14.20 Fixed in 2.14.20 Patch available GHSA-wp4p-9pxh-cgx2
- github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.2.0-rc1 to before 3.2.0-rc2 Fixed in 3.2.0-rc2 Patch available GHSA-wp4p-9pxh-cgx2
- github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.1.0-rc1 to before 3.1.8 Fixed in 3.1.8 Patch available GHSA-wp4p-9pxh-cgx2
- github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.0.0-rc1 to before 3.0.19 Fixed in 3.0.19 Patch available GHSA-wp4p-9pxh-cgx2
Remediation
- Fix · CNA argo-cd (argoproj) Fixed in 2.14.20, 3.2.0-rc2, 3.1.8, 3.0.19
- Fix · GHSA-wp4p-9pxh-cgx2 github.com/argoproj/argo-cd/v2 (Go) Fixed in 2.14.20 Advisory →
- Fix · GHSA-wp4p-9pxh-cgx2 github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.2.0-rc2 Advisory →
- Fix · GHSA-wp4p-9pxh-cgx2 github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.1.8 Advisory →
- Fix · GHSA-wp4p-9pxh-cgx2 github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.0.19 Advisory →
Red Hat 3 advisories
- RHSA-2025:18093 Released 2025-10-15 · Red Hat rating ImportantRed Hat OpenShift GitOps v1.18.1 security update
- Red Hat OpenShift GitOps 1.18 registry.redhat.io/openshift-gitops-1/argocd-rhel8, registry.redhat.io/openshift-gitops-1/argocd-rhel9, registry.redhat.io/openshift-gitops-1/gitops-operator-bundle
- RHSA-2025:17731 Released 2025-10-09 · Red Hat rating ImportantRed Hat OpenShift GitOps v1.17.2 security update
- Red Hat OpenShift GitOps 1.17 registry.redhat.io/openshift-gitops-1/argo-rollouts-rhel8, registry.redhat.io/openshift-gitops-1/argocd-rhel8, registry.redhat.io/openshift-gitops-1/argocd-rhel9 +4
- RHSA-2025:17730 Released 2025-10-09 · Red Hat rating ImportantRed Hat OpenShift GitOps v1.16.4 security update
- Red Hat OpenShift GitOps 1.16 registry.redhat.io/openshift-gitops-1/argo-rollouts-rhel8, registry.redhat.io/openshift-gitops-1/argocd-rhel8, registry.redhat.io/openshift-gitops-1/argocd-rhel9 +3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Developer Hub 1 | Affected | No fix planned: Will not fix |
| Red Hat OpenShift GitOps 1.16 | Fixed | RHSA-2025:17730 |
| Red Hat OpenShift GitOps 1.17 | Fixed | RHSA-2025:17731 |
| Red Hat OpenShift GitOps 1.18 | Fixed | RHSA-2025:18093 |
Not affected: 4 products
- Red Hat OpenShift GitOps
- Red Hat OpenShift GitOps 1.16
- Red Hat OpenShift GitOps 1.17
- Red Hat OpenShift GitOps 1.18
Timeline
- 2026-10-02 Threatist record created from CVE-2025-59537
- 2026-10-03 Alias added: GHSA-wp4p-9pxh-cgx2
- 2026-10-27 Affected versions changed · Red Hat
References
More argoproj Argo Cd vulnerabilities
- 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-2026-31086 ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction CVSS 3.1CRITICAL 9.6
- 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
Sources
- CVE-2025-59537 · CVE Program
- CVE-2025-59537 · NVD
- FIRST EPSS
- GHSA-wp4p-9pxh-cgx2 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-59537 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences