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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-77421

CVE-2026-77421: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

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 severityMedium5.7

    Medium [CVE-2026-77421] Denial of Service in Nano Editor Regex Search

    CVE-2026-77421Source published Source updated

    Denial of Service in Nano Editor Regex Search. Red Hat rates this moderate (CVSS 5.7). Weakness: CWE-1333. Affected products named by the advisory: Red Hat AMQ Broker 7; Red Hat Fuse 7; Red Hat OpenShift AI (RHOAI); Red Hat OpenStack Platform 13 (Queens).

    Related products — impact not confirmed
    • Red Hat AMQ Broker 7
    • Red Hat Fuse 7
    • Red Hat OpenShift AI (RHOAI)
    • Red Hat OpenStack Platform 13 (Queens)
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • 3.30.15
    • 4.3.1
    Mitigation guidance
    • Do not expose the JLine built-in nano editor to untrusted users. If applications embedding JLine must provide an interactive editor, disable the regex search mode or restrict editor access to authenticated and trusted users only.
    Full advisory and evidenceOpen source bulletin

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