CLEANSTART-2026-NB17779

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    CLEANSTART-2026-NB17779

    Published: 5 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-110879

    Summary: jackson-databind validates the outer class of a class-name type ID but accepts attacker-selected classes inside its generic arguments, even when those classes violate the declared type or would be ...

    Details: Security vulnerability affects the keycloak package. jackson-databind validates the outer class of a class-name type ID but accepts attacker-selected classes inside its generic arguments, even when those classes violate the declared type or would be rejected as direct type IDs.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-NB17779.json, https://osv.dev/vulnerability/CVE-2026-110879, https://nvd.nist.gov/vuln/detail/CVE-2026-110879

    Affected packages

    Package

    Name: keycloak

    Purl: pkg:apk/cleanstart/keycloak

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -26.8.1-r1

    Affected versions

    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
    CLEANSTART-2026-NB17779 | CVE-DB