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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-44690

CVE-2026-44690: 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 severityHigh8.6

    High [CVE-2026-44690] Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes

    CVE-2026-44690Source published Source updated

    In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198 aggressive NSEC processing leads to cache poisoning that permits a malicious actor controlling a single delegated zone to poison arbitrary sibling zones under NSEC-signed parent domains. A malicious actor with one registered domain under an NSEC-signed TLD can serve malicious insecure DNS responses for unrelated sibling domains (sharing the same parent zone). Arbitrary delegations that do not exist under the parent domain and are covered by the parent's NSEC chain can be brought into insecure existence by fraudulent wildcard DS records (less labels than expected, unknown algorithm) from the malicious sibling domain. A flaw was…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 8
    • Red Hat Enterprise Linux 9
    • Red Hat OpenShift Container Platform 4.22

    2 more entries in the full advisory.

    Source-reported affected versions
    • 1.7.0
    • 1.25.1
    Source-reported fixed versions
    • unbound-0:1.24.2-7.el10_2.4
    • unbound-0:1.16.2-5.14.el8_10
    • unbound-0:1.24.2-3.el9_8.4
    • rhcos-4.22.9.8.202608251819-0

    6 more entries in the full advisory.

    Mitigation guidance
    • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
    Full advisory and evidenceOpen source bulletin

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