CVE-2026-41323Disclosure(kyverno / kyverno)

LOWCVSS 9.1 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch kyverno kyverno systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-200CWE-918

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • kyverno

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-25); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
Products
kyverno

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-25: 1Mentions · 2026-04-29: 1Patch / Workaround · 2026-04-29: 1Technical Details · 2026-04-29: 104-2504-29
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-251
Disclosure1
2026-04-291
Patch1
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-41323 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 Cl… https://www.cve.org/CVERecord?id=CVE-2026-41323

    Post summary

    The post briefly announces that earlier Kyverno releases are vulnerable via the apiCall feature, but provides no PoC, exploit, patch, or exploitation evidence.

    0000196
    57.2K followersView on X
  • Vulert@vulert_official
    Patch

    🚨 Kyverno alert CVE-2026-41323 → ServiceAccount token leakage ⚠️ Patch now & rotate tokens. https://vulert.com/vuln-db/CVE-2026-41323 #CyberSecurity #Kubernetes #Vulert https://t.co/6evfI7y3wI

    Post summary

    The tweet alerts on CVE-2026-41323, a ServiceAccount token leakage in Kyverno, and urges users to patch immediately and rotate tokens.

    0000040
    125 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appkyvernokyverno---
Appkyvernokyverno---

Explore more