CVE-2026-4890
CVE-2026-4890: 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.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.5
High [CVE-2026-4890] NSEC bitmap parsing infinite loop
CVE-2026-4890Source published
NSEC bitmap parsing infinite loop. Red Hat rates this important (CVSS 7.5). Weakness: CWE-835. Affected package(s): dnsmasq. Resolved in Red Hat advisory RHSA-2026:20589 — update the affected packages (`sudo dnf update`).
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9.6 Extended Update Support
- Red Hat OpenShift Container Platform 4.19
- Source-reported affected versions
- dnsmasq-0:2.85-17.el9_6.1
- dnsmasq-0:2.90-7.el10_2
- dnsmasq-0:2.85-18.el9_8.1
- dnsmasq-0:2.79-36.el8_10
- Source-reported fixed versions
- RHSA-2026:20589
- Mitigation guidance
- Update the affected package(s) to the fixed version shipped in RHSA-2026:20589 (`sudo dnf update` / `yum update`).
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