Debian/unbound: medium 5.9
NLnet Labs Unbound 1.12.0 up to and including 1.26.0 has a use-after-free vulnerability when compiled for DNS-over-HTTPs support with '--with-libnghttp2'. During failure code paths (i.e., RPZ drop que
Action: Upgrade unbound to 1.26.1-0+deb13u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.26.1-0+deb13u1 | - |
Fixed versions
| 1.26.1-0+deb13u1 |
Sources
- osv: DEBIAN-CVE-2026-82720#Debian:13/unbound
- https://security-tracker.debian.org/tracker/CVE-2026-82720
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