OPENSUSE-SU-2026:20386-1: cosign security update

OPENSUSE-SU-2026:20386-1, released March 18, 2026, fixes 9 CVEs in cosign (version 3.0.5-160000.1.1). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

0.0060

48th percentile

Priority of the 9 CVEs

Patch now 0
                                Urgent 0
                                High 2
                                Routine 7

Fixed package versions

Product	Release	Fixed in
cosign	opensuse-leap 16.0	3.0.5-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-23991	golang-github-theupdateframework-go-tuf: go-tuf is a Go implementation of The Update Framework (TUF)	7.5	0.0058	None reported
High	CVE-2026-23992	golang-github-theupdateframework-go-tuf: go-tuf is a Go implementation of The Update Framework (TUF)	7.5	0.0022	None reported
Routine	CVE-2025-58181	golang-go.crypto: SSH servers parsing GSSAPI authentication requests do not validate the number of mechanisms specified in the request,...	5.3	0.0060	None reported
Routine	CVE-2025-11065	alloy: This update for alloy fixes the following issues: - update to 1.11.3: - CVE-2025-58058: Fixed memory leaks in xz	5.3	0.0052	None reported
Routine	CVE-2026-26958	golang-filippo-edwards25519: filippo.io/edwards25519 is a Go library implementing the edwards25519 elliptic curve with APIs for building cryptogra...	n/a	0.0042	None reported
Routine	CVE-2026-24137	golang-github-sigstore-sigstore: sigstore framework is a common go library shared across sigstore services and clients	5.8	0.0039	None reported
Routine	CVE-2026-22772	golang-github-sigstore-fulcio: Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity	5.3	0.0023	None reported
Routine	CVE-2026-24122	cosign: Cosign provides code signing and transparency for containers and binaries	3.7	0.0022	None reported
Routine	CVE-2026-22703	cosign: Cosign provides code signing and transparency for containers and binaries	5.5	0.0011	None reported

Also fixes CVE-2026-23991

OPENSUSE-SU-2026:21483-1
govulncheck-vulndb on opensuse-leap 16.0
SUSE-SU-2026:0757-1
govulncheck-vulndb on opensuse-leap 15.6
SUSE-SU-2026:20904-1
cosign on sles 16.0
SUSE-SU-2026:0777-1
cosign on opensuse-leap 15.6, sles 15.7
DEBIAN-CVE-2026-23991
golang-github-theupdateframework-go-tuf on Debian 14

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:20386-1

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