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PT-2026-20949

🗓️ 19 Feb 2026 00:00:00Reported by Positive TechnologiesType 
ptsecurity
 ptsecurity🔗 dbugs.ptsecurity.com👁 5 Views

Cosign had a certificate expiry validation flaw in versions 3.0.4 and below; fixed in 3.0.5.

Related
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-21435
12 Feb 202618:22
–attackerkb
ATTACKERKB		CVE-2026-26963
19 Feb 202623:38
–attackerkb
AlpineLinux		CVE-2026-24122
19 Feb 202622:27
–alpinelinux
Chainguard		CVE-2026-21435 vulnerabilities
23 Feb 202613:17
–cgr
Chainguard		CVE-2026-24122 vulnerabilities
16 Jun 202620:22
–cgr
Circl		CVE-2026-21435
12 Feb 202621:40
–circl
Circl		CVE-2026-24122
19 Feb 202622:40
–circl
Circl		CVE-2026-25120
14 Feb 202621:23
–circl
CNNVD		webtransport-go 资源管理错误漏洞
12 Feb 202600:00
–cnnvd
CNNVD		cosign 信任管理问题漏洞
19 Feb 202600:00
–cnnvd
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28 Apr 2026 00:00Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.13.7 - 7.5
CVSS 45.1
EPSS0.00413
SSVC
Cosigncertificate expiryverification issuerekor transparency logprivate certificate authorityversion 3.0.5
5