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CVE-2025-59538

Argoproj Argo Cd vulnerability

7.5 HIGHPublic exploitEPSS 8.93%
  1. Published1 Oct 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Argoproj Argo Cd≥ 2.9.0 < 2.14.20 · ≥ 3.0.0 < 3.0.19 · ≥ 3.1.0 < 3.1.8 · 3.2.0

Remediation

Fixed in
Argoproj Argo Cd≥ 2.14.20

References

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Frequently asked

Is CVE-2025-59538 being actively exploited?

CVE-2025-59538 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 8.93%.

How severe is CVE-2025-59538?

CVE-2025-59538 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 8.93% probability of exploitation.

Which products are affected by CVE-2025-59538?

Affected products include Argoproj Argo Cd.

How do I fix CVE-2025-59538?

Upgrade affected software to a fixed version, for example Argoproj Argo Cd 2.14.20 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-59538 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.