# github.com/sigstore/cosign (Go) vulnerabilities Source: https://junglewise.ai/threats/technologies/github-com-sigstore-cosign Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/github-com-sigstore-cosign.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 9 vulnerabilities in github.com/sigstore/cosign (Go): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-39395, was published on 7 April 2026. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 9 (0 critical, 0 exploited in the wild) ## About github.com/sigstore/cosign (Go) Container image signing and verification tool for Kubernetes and supply chain security. ## Latest github.com/sigstore/cosign (Go) vulnerabilities - [CVE-2026-39395: Sigstore Cosign validation bypass in verify-blob-attestation](https://junglewise.ai/threats/cve-2026-39395-sigstore-cosign-validation-bypass-in-verify-blob-attestation) (medium, CVSS 4.3, published 7 Apr 2026) - [CVE-2026-24122: Cosign considered signatures valid with expired intermediate certificates when transparency log verification is skipped](https://junglewise.ai/threats/cve-2026-24122-cosign-considered-signatures-valid-with-expired-intermediate) (low, CVSS 3.1, published 23 Feb 2026) - [CVE-2026-22703: GO-2026-4309 - Cosign verification accepts any valid Rekor entry under certain conditions in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2026-22703-cosign-verification-accepts-any-valid-rekor-entry-under-certain) (low, CVSS 3.1, published 13 Jan 2026) - [CVE-2024-29902: GO-2024-2718 - Cosign malicious attachments can cause system-wide denial of service in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2024-29902-cosign-malicious-attachments-can-cause-system-wide-denial-of) (low, CVSS 3.1, published 5 Jun 2024) - [CVE-2024-29903: GO-2024-2719 - Cosign malicious artifacts can cause machine-wide DoS in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2024-29903-cosign-malicious-artifacts-can-cause-machine-wide-dos) (low, CVSS 3.1, published 5 Jun 2024) - [CVE-2022-36056: GO-2022-0998 - Improper blob verification in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2022-36056-cosign-bundle-can-be-crafted-to-successfully-verify-a-blob-even) (low, CVSS 3.1, published 9 Nov 2023) - [CVE-2023-46737: GO-2023-2181 - Denial of service attack from remote registry in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2023-46737-cosign-vulnerable-to-possible-endless-data-attack-from-attacker) (low, CVSS 3.1, published 9 Nov 2023) - [CVE-2022-23649: GO-2022-0326 - Improper certificate validation in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2022-23649-improper-certificate-validation-in-cosign) (low, CVSS 3.1, published 9 Nov 2023) - [CVE-2022-35929: GO-2022-0758 - Improper verification of signature attestations in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2022-35929-cosign-s-cosign-verify-attestaton-type-can-report-a-false) (low, CVSS 3.1, published 9 Nov 2023) ## Most severe github.com/sigstore/cosign (Go) vulnerabilities - [CVE-2026-39395: Sigstore Cosign validation bypass in verify-blob-attestation](https://junglewise.ai/threats/cve-2026-39395-sigstore-cosign-validation-bypass-in-verify-blob-attestation) (medium, CVSS 4.3, published 7 Apr 2026) - [CVE-2024-29903: GO-2024-2719 - Cosign malicious artifacts can cause machine-wide DoS in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2024-29903-cosign-malicious-artifacts-can-cause-machine-wide-dos) (low, CVSS 3.1, published 5 Jun 2024) - [CVE-2024-29902: GO-2024-2718 - Cosign malicious attachments can cause system-wide denial of service in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2024-29902-cosign-malicious-attachments-can-cause-system-wide-denial-of) (low, CVSS 3.1, published 5 Jun 2024) - [CVE-2022-35929: GO-2022-0758 - Improper verification of signature attestations in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2022-35929-cosign-s-cosign-verify-attestaton-type-can-report-a-false) (low, CVSS 3.1, published 9 Nov 2023) - [CVE-2023-46737: GO-2023-2181 - Denial of service attack from remote registry in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2023-46737-cosign-vulnerable-to-possible-endless-data-attack-from-attacker) (low, CVSS 3.1, published 9 Nov 2023) - [CVE-2026-24122: Cosign considered signatures valid with expired intermediate certificates when transparency log verification is skipped](https://junglewise.ai/threats/cve-2026-24122-cosign-considered-signatures-valid-with-expired-intermediate) (low, CVSS 3.1, published 23 Feb 2026) - [CVE-2022-23649: GO-2022-0326 - Improper certificate validation in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2022-23649-improper-certificate-validation-in-cosign) (low, CVSS 3.1, published 9 Nov 2023) - [CVE-2022-36056: GO-2022-0998 - Improper blob verification in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2022-36056-cosign-bundle-can-be-crafted-to-successfully-verify-a-blob-even) (low, CVSS 3.1, published 9 Nov 2023) - [CVE-2026-22703: GO-2026-4309 - Cosign verification accepts any valid Rekor entry under certain conditions in github.com/sigstore/cosign](https://junglewise.ai/threats/cve-2026-22703-cosign-verification-accepts-any-valid-rekor-entry-under-certain) (low, CVSS 3.1, published 13 Jan 2026) ## Vulnerabilities per week Nothing was published in the last eight weeks. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Go technologies - [github.com/mattermost/mattermost-server (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server): 297 vulnerabilities - [github.com/mattermost/mattermost-server/v6 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v6): 222 vulnerabilities - [github.com/mattermost/mattermost/server/v8 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v8): 207 vulnerabilities - [github.com/mattermost/mattermost-server/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v5): 199 vulnerabilities - [stdlib (Go)](https://junglewise.ai/threats/technologies/go-stdlib): 178 vulnerabilities - [github.com/siyuan-note/siyuan/kernel (Go)](https://junglewise.ai/threats/technologies/github-com-siyuan-note-siyuan-kernel): 160 vulnerabilities - [code.gitea.io/gitea (Go)](https://junglewise.ai/threats/technologies/code-gitea-io-gitea): 126 vulnerabilities - [code.vikunja.io/api (Go)](https://junglewise.ai/threats/technologies/code-vikunja-io-api): 91 vulnerabilities - [gogs.io/gogs (Go)](https://junglewise.ai/threats/technologies/gogs-io-gogs): 81 vulnerabilities - [github.com/traefik/traefik/v2 (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v2): 78 vulnerabilities - [github.com/traefik/traefik (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik): 75 vulnerabilities - [github.com/usememos/memos (Go)](https://junglewise.ai/threats/technologies/github-com-usememos-memos): 75 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "github.com/sigstore/cosign (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-sigstore-cosign, 13 November 2026.