OPENSUSE-SU-2026:22064-1: cosign security update

OPENSUSE-SU-2026:22064-1, released November 7, 2026, fixes 6 CVEs in cosign (version 3.1.3-160000.1.1). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

8.8

Base score, 0 to 10

Highest EPSS

0.0061

49th percentile

Priority of the 6 CVEs

Patch now 0
                                Urgent 0
                                High 5
                                Routine 1

Fixed package versions

Product	Release	Fixed in
cosign	opensuse-leap 16.0	3.1.3-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-56855	Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh	7.5	0.0050	None reported
High	CVE-2026-56852	Infinite loop on invalid input in golang.org/x/text	8.8	0.0048	None reported
High	CVE-2026-56854	golang-go.crypto: The source-address critical option in the Permissions returned by an authentication callback was only enforced for th...	7.5	0.0044	None reported
High	CVE-2026-78662	Prevent DoS on deadlocked undecided channel in golang.org/x/crypto/ssh	7.5	0.0043	None reported
High	CVE-2026-56864	Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb	7.5	0.0030	None reported
Routine	CVE-2026-84304	gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation	4.4	0.0061	None reported

Also fixes CVE-2026-56855

OPENSUSE-SU-2026:21824-1
containerized-data-importer1.65 on opensuse-leap 16.0
SUSE-SU-2026:4209-1
containerized-data-importer on sles 15.7
OPENSUSE-SU-2026:21924-1
cloudflared on opensuse-leap 16.0
OPENSUSE-SU-2026:21999-1
rclone on opensuse-leap 16.0
SUSE-SU-2026:4270-1
google-guest-agent on sles 15.6, sles 15.7
ALAS2023-2026-3266
docker, docker-debuginfo, docker-debugsource on amzn 2023
ALAS2023-2026-3273
containerd, containerd-debuginfo, containerd-debugsource and 2 more on amzn 2023
ALAS2023-2026-3274
nerdctl on amzn 2023

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:22064-1

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