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    CVE-2026-100704

    Kyverno is a policy engine for Kubernetes. In versions 1.14.0 through 1.19.0, the ImageValidatingPolicy (policies.kyverno.io/v1beta1) evaluator never reads the spec.images and spec.allowedValues fields of a PolicyException. Any PolicyException whose policyRefs and matchConditions match a resource causes image signature verification to be skipped for the entire resource rather than only for the listed images or values, so an exception intended to exempt a single trusted image exempts every image on the matched resource(s). As a result, unsigned or untrusted images can be admitted to the cluster without signature verification. This differs from ValidatingPolicy, GeneratingPolicy, and MutatingPolicy, which treat the same field as a partial exemption. The issue is fixed in version 1.19.1.

    Published:Sep 26, 2026
    Last Modified:Sep 28, 2026
    EPS:Sep 26, 2026
    EPSS Score:0.00181
    CVSS Score:7.7

    Affected Products

    Vendor
    Kyverno
    Product
    Kyverno

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    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…

    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