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    CVE-2026-23881

    Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have unbounded memory consumption in Kyverno's policy engine that allows users with policy creation privileges to cause denial of service by crafting policies that exponentially amplify string data through context variables. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability.

    Published:Jan 27, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 27, 2026
    EPSS Score:0.00062
    CVSS Score:7.7

    Affected Products

    Vendor
    Kyverno
    Product
    Kyverno

    Exploits

    https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq

    Related CVEs

    CVE-2026-84200 (CVSS 9.4) — Kyverno versions v1.9.0 through v1.12.7 contain a policy exception handling flaw. When a policy in enforce mod…
    CVE-2026-84199 (CVSS 6.9) — Kyverno before 1.16.2 contains a server-side request forgery (SSRF) vulnerability in the APICall feature. The …
    CVE-2026-84196 (CVSS 8.3) — Kyverno before 1.18.0 contains a server-side request forgery vulnerability in apiCall.service.url that allows …
    CVE-2026-84195 (CVSS 8.3) — Kyverno before 1.16.4 automatically attaches the admission controller's ServiceAccount token to outbound HTTP …
    CVE-2025-15613 (CVSS 6.9) — Kyverno before v1.13.4 is vulnerable to server-side request forgery (SSRF) via its Service Call functionality.…
    CVE-2023-54356 (CVSS 9.3) — Kyverno versions 1.9.4 and earlier support insecure 3DES cipher suites (TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA an…
    CVE-2026-54523 (CVSS 9.6) — Kyverno is a policy engine designed for cloud native platform engineering teams. From 1.18.0 until 1.18.2, the…
    CVE-2026-44245 (CVSS 6.1) — Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to 2.5.2, Vue 3's v-htm…
    CVE-2026-41485 (CVSS 7.7) — Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.17.2 and …
    CVE-2026-41323 (CVSS 8.1) — Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0-rc1,…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High