CVE-2026-2291
high
CVSS v3
7.3
CVSS v4 NEW
—
VIR risk
7.3
Description
Important: dnsmasq security update
Predictions
Exploit likelihood
82%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| debian | bookworm | fixed | 2.90-4~deb12u2 |
| debian | bullseye | affected | |
| debian | forky | fixed | 2.92-5 |
| debian | sid | fixed | 2.92-5 |
| debian | trixie | fixed | 2.91-1+deb13u1 |
| sles | affected | | |
| almalinux | 8 | fixed | dnsmasq-2.79-36.el8_10.aarch64.rpm |
| windows | affected | |
References
- https://access.redhat.com/errata/RHSA-2026:19373
- https://github.com/NixOS/nixpkgs/pull/519082
- https://github.com/NixOS/nixpkgs/pull/519093
- https://github.com/pi-hole/FTL/releases/tag/v6.6.2
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html
- https://thekelleys.org.uk/dnsmasq/CVE/
- https://www.kb.cert.org/vuls/id/471747
- https://www.suse.com/security/cve/CVE-2026-2291.html
- https://security-tracker.debian.org/tracker/CVE-2026-2291
- https://access.redhat.com/errata/RHSA-2026:20589
- https://bugzilla.redhat.com/2439088
- https://bugzilla.redhat.com/2458516
- https://bugzilla.redhat.com/2458517
- https://bugzilla.redhat.com/2458518
- https://bugzilla.redhat.com/2458519
- https://errata.almalinux.org/8/ALSA-2026-20589.html
- https://errata.almalinux.org/9/ALSA-2026-19373.html
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-2291
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.