CVE-2026-2291

HIGH 7.3

CVE-2026-2291

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

9th

dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.

Vendor	dnsmasq
Product	dnsmasq
Published	May 11, 2026
Last Updated	May 13, 2026

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Affected Versions

dnsmasq / dnsmasq

2.92rel2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

suse.com: https://www.suse.com/security/cve/CVE-2026-2291.html kb.cert.org: https://www.kb.cert.org/vuls/id/471747 thekelleys.org.uk: https://thekelleys.org.uk/dnsmasq/CVE/ lists.thekelleys.org.uk: https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html github.com: https://github.com/NixOS/nixpkgs/pull/519082 github.com: https://github.com/NixOS/nixpkgs/pull/519093 github.com: https://github.com/pi-hole/FTL/releases/tag/v6.6.2