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Public proof of conceptFix available

CVE-2025-59538

A public proof of concept exists; no exploitation attested.

  • Published2025-10-01
  • Fixed in3.2.0-rc2 · 3.1.8 · 3.0.19 · 2.14.20
  • WeaknessCWE-248 · CWE-703

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2025-10-0121:16CVE publishedNVD
  2. 2026-11-0909:28EPSS crossed 10 %FIRST EPSS

Versions per branch

OSV · NVD
Argoproj argo cd
BranchAffectedFixed in
3.2≥ 3.2.0-rc1, < 3.2.0-rc23.2.0-rc2
3.1≥ 3.1.0, < 3.1.83.1.8
3.1≥ 3.1.0-rc1, < 3.1.83.1.8
3.0≥ 3.0.0, < 3.0.193.0.19
3.0≥ 3.0.0-rc1, < 3.0.193.0.19
2.x≥ 2.9.0, < 2.14.202.14.20
2.x≥ 2.9.0-rc1, < 2.14.202.14.20
3.2= 3.2.0no fix published
argoproj/argo-cd
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • argoproj argo-cd
    Affected
    • = >= 2.9.0-rc1, < 2.14.20no fix stated
    • = >= 3.2.0-rc1, < 3.2.0-rc2no fix stated
    • = >= 3.1.0-rc1, < 3.1.8no fix stated
    • = >= 3.0.0-rc1, < 3.0.19no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-10-01

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • argo-cdCleanStartall versions · fixed in 3.0.19-r0and 1 other package
  • argo-cdCleanStartall versions · fixed in 3.1.8.-r0and 1 other package
  • argo-cd-2.13Chainguardall versions · fixed in 2.13.9-r5
  • argo-cd-2.13-compatChainguardall versions · no fixed version listed
  • argocd-2.13MinimOSall versions · no fixed version listedand 5 other packages
  • argocd-2.14MinimOSall versions · fixed in 2.14.20-r0and 5 other packages
  • argocd-3.0MinimOSall versions · fixed in 3.0.19-r0and 5 other packages
  • argocd-3.1MinimOSall versions · fixed in 3.1.8-r0and 5 other packages

5 more package ranges on OSV.dev

Vendor advisories

  • CVE-2025-59538 Red Hat Product Security31 products fixed · 4 known affected

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

    rhdh-orchestrator-dev-preview-beta/controller-rhel9-operator as a component of Red Hat Developer Hub 1 · rhdh-orchestrator-dev-preview-beta/orchestrator-operator-bundle as a component of Red Hat Developer Hub 1 · openshift-gitops-1/dex-rhel8 as a component of Red Hat OpenShift GitOps · +1 more

  • RHSA-2025:18093 Red Hat Product Security9 products fixed

    Red Hat Security Advisory: Red Hat OpenShift GitOps v1.18.1 security update

  • RHSA-2025:17731 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: Red Hat OpenShift GitOps v1.17.2 security update

  • RHSA-2025:17730 Red Hat Product Security9 products fixed

    Red Hat Security Advisory: Red Hat OpenShift GitOps v1.16.4 security update

Full record on NVD

Fix

  1. Update Argoproj argo cd to 3.2.0-rc2 · 3.1.8 · 3.0.19 · 2.14.20
  2. Vendor fix Red Hat Product Security RHSA-2025:18093 · 9 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  3. Workaround from the vendor Red Hat Product Security RHSA-2025:18093 · 41 productsMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
  4. No fix available, says the vendor Red Hat Product Security CVE-2025-59538 · 2 productsAffected
  5. No fix planned, says the vendor Red Hat Product Security CVE-2025-59538 · 2 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2025-10-02
  • CNACVSS 3.17.5known since 2026-10-23
  • CNAweakness (CWE)CWE-248, CWE-703known since 2026-10-23
  • FIRST EPSSEPSS score10.1 %read 2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2025-09-30

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2025-10-01
Last Modified
2026-10-12
NVD status
Analyzed
GitHub Advisory
GHSA-gpx4-37g2-c8pv

Frequently asked questions

What is CVE-2025-59538?

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.

Is CVE-2025-59538 actively exploited?

A proof-of-concept exploit exists for CVE-2025-59538, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-59538?

CVE-2025-59538 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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