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CVE-2026-41323

Kyverno server-side request forgery (SSRF)

8.1 HIGHPublic exploitEPSS 0.57%
  1. Published24 Apr 2026

Description

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4, Kyverno's apiCall feature in ClusterPolicy automatically attaches the admission controller's ServiceAccount token to outgoing HTTP requests. The service URL has no validation — it can point anywhere, including attacker-controlled servers. Since the admission controller SA has permissions to patch webhook configurations, a stolen token leads to full cluster compromise. Versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4 patch the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected products

Kyverno≥ 1.17.0 < 1.17.2 · < 1.16.4

Remediation

Fixed in
Kyverno≥ 1.17.2

References

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Frequently asked

Is CVE-2026-41323 being actively exploited?

CVE-2026-41323 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.57%.

How severe is CVE-2026-41323?

CVE-2026-41323 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.57% probability of exploitation.

Which products are affected by CVE-2026-41323?

Affected products include Kyverno.

How do I fix CVE-2026-41323?

Upgrade affected software to a fixed version, for example Kyverno 1.17.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-41323 against the real software inventory on every managed device, as each hourly inventory arrives. 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.