OPENSUSE-SU-2026:22082-1: unbound security update

OPENSUSE-SU-2026:22082-1, released November 7, 2026, fixes 9 CVEs in unbound (version 1.26.1-160000.1.1). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0096

61st percentile

Priority of the 9 CVEs

Patch now 0
                                Urgent 0
                                High 5
                                Routine 4

Fixed package versions

Product	Release	Fixed in
unbound	opensuse-leap 16.0	1.26.1-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-81642	Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY	9.8	0.0096	None reported
High	CVE-2026-82717	CNAME synthesis could lead to heap corruption	9.8	0.0078	None reported
High	CVE-2026-80225	Possible degradation of service from continuous queries on the same TCP/DoT connection	7.5	0.0048	None reported
High	CVE-2026-85501	Retrap: Novel Vulnerabilities to launch Algorithmic Complexity Attacks on DNSSEC	7.5	0.0048	None reported
High	CVE-2026-81634	Possible heap buffer overflow during DNSSEC canonicalization	9.8	0.0048	None reported
Routine	CVE-2026-82720	Use-after-free in DoH stream cleanup code path	5.9	0.0038	None reported
Routine	CVE-2026-78227	Use-after-free in DoQ stream output buffer on reset re-transmission	6.5	0.0034	None reported
Routine	CVE-2026-77860	'serve-expired' can bypass Unbound 'wait-limit'	3.7	0.0030	None reported
Routine	CVE-2026-77955	unbound: In NLnet Labs Unbound 1.13.2 up to and including 1.26.1, a vulnerability in ZONEMD configured zones (zonemd-check: ye...	4.4	0.0017	None reported

Also fixes CVE-2026-81642

SUSE-SU-2026:4620-1
unbound on sles 15.6, sles 15.7
SUSE-SU-2026:24226-1
unbound on sles 16.0
RLSA-2026:71487
unbound on rocky 9
RLSA-2026:71419
unbound on rocky 10
RHSA-2026:71487
python3-unbound, unbound, unbound-devel and 2 more on RHEL 9
RLSA-2026:70754
unbound on rocky 8
ALSA-2026:71419
python3-unbound, unbound, unbound-anchor and 4 more on almalinux 10
ALSA-2026:71487
python3-unbound, unbound, unbound-devel and 2 more on almalinux 9

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:22082-1

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