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Fencer Vulns
high 7.5

CVE-2025-59538 in the critical feed json

Argo CD is Vulnerable to Unauthenticated Remote DoS via malformed Azure DevOps git.push webhook

published 2025-09-30 13 mo ago modified 2026-10-12 28 d ago also BIT-argo-cd-2025-59538 , EUVD-2025-31758 , GHSA-gpx4-37g2-c8pv , GO-2025-3995

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
10.1%
EPSS 10.1% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. For versions 2.9.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.6 and 3.0.17, when the webhook.azuredevops.username and webhook.azuredevops.password are not set in the default configuration, the /api/webhook endpoint crashes the entire argocd-server process when it receives an Azure DevOps Push event whose JSON array resource.refUpdates is empty. The slice index [0] is accessed without a length check, causing an index-out-of-range panic. A single unauthenticated HTTP POST is enough to kill the process. This issue is resolved in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.

Patch / fix

  • go github.com/argoproj/argo-cd/v2 2.14.20
  • go github.com/argoproj/argo-cd/v3 3.0.19, 3.1.8, 3.2.0-rc2
  • bitnami argo-cd 2.14.20, 3.0.19, 3.1.8
  • linuxfoundation argo-cd 2.14.20, 3.0.19, 3.1.8, 3.2.0-rc2
  • linuxfoundation argo_continuous_delivery 2.14.20, 3.0.19, 3.1.8, 3.2.0-rc2
  • govulncheck-vulndb SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 0.0.20251023T162509-150000.1.110.1

suse advisories SUSE-SU-2025:3799-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
  • govulncheck-vulndb openSUSE Tumbleweed 0.0.20251023T162509-1.1

opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2025:15666-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-59538 updated cvss 5.3

github.com/argoproj/argo-cd: Argo CD unauthenticated Remote Denial of Service

  • Red Hat Developer Hub 1 rhdh-orchestrator-dev-preview-beta/controller-rhel9-operator, rhdh-orchestrator-dev-preview-beta/orchestrator-operator-bundle
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift GitOps openshift-gitops-1/dex-rhel8, openshift-gitops-1/gitops-rhel8
    affected: workaround, no fix available
  • Red Hat OpenShift GitOps 1.16 openshift-gitops-1
    fixed: vendor fix RHSA-2025:17730
  • Red Hat OpenShift GitOps 1.17 openshift-gitops-1
    fixed: vendor fix RHSA-2025:17731
  • Red Hat OpenShift GitOps 1.18 openshift-gitops-1
    fixed: vendor fix RHSA-2025:18093
  • Red Hat OpenShift GitOps openshift-gitops-1/must-gather-rhel8, openshift-gitops-1/argocd-agent-rhel8, openshift-gitops-1/argo-rollouts-rhel8, openshift-gitops-1/console-plugin-rhel8, openshift-gitops-1/argocd-extensions-rhel8
    not affected: vulnerable code not in execute path
  • Red Hat OpenShift GitOps 1.16 openshift-gitops-1 Red Hat OpenShift GitOps 1.17 openshift-gitops-1 Red Hat OpenShift GitOps 1.18 openshift-gitops-1
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. EPSS reached 10%

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
13 mo ago

Exploit prediction

10.11% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08). It first reached 10% on 2026-11-08.

Exploits and checks

  • github.com https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/argoproj/argo-cd/v2
>=2.9.0-rc1, <2.14.20
2.14.20
go github.com/argoproj/argo-cd/v3
>=3.2.0-rc1, <3.2.0-rc2
>=3.1.0-rc1, <3.1.8
>=3.0.0-rc1, <3.0.19
3.2.0-rc2
3.1.8
3.0.19
bitnami argo-cd
>=2.9.0, <2.14.20
>=3.0.0, <3.0.19
>=3.1.0, <3.1.8
2.14.20
3.0.19
3.1.8
go github.com/argoproj/argo-cd
all versions
 no fix listed

Affected products

  • argoproj argo-cd

Classification

Weakness
  • CWE-248 Uncaught Exception
  • CWE-703 Improper Check or Handling of Exceptional Conditions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.