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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-45623

CVE-2026-45623: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-45623] Information disclosure and denial of service via crafted CSS input

    CVE-2026-45623Source published Source updated

    PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. In versions 8.5.11 and prior, the PreviousMap parses the /*# sourceMappingURL=PATH */ comment from any CSS string passed to process() and dereferences PATH against the local filesystem with no scheme, allowlist, or traversal check. An attacker who controls the CSS input can cause the host process to read any file readable by Node and leak the first ~10 bytes of its content through the resulting JSON.parse SyntaxError message. The bug also yields a precise file-existence oracle and a controllable-read primitive that may be combined with large-file targets for DoS. The behaviour is triggered with PostCSS's default options — no from, no map, no plugins…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • multicluster engine for Kubernetes 2.11
    • multicluster engine for Kubernetes 2.17
    • multicluster engine for Kubernetes 2.8

    35 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • 8.5.12
    • rh-podman-desktop-0:1.1.2-1.el10_2
    • multicluster-engine/console-mce-rhel9:1786911977
    • multicluster-engine/console-mce-rhel9:1786668856

    46 more entries in the full advisory.

    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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