GO-2026-4529 Cosign considered signatures valid with expired intermediate certificates when transparency log verification is skipped in github.com/sigstore/cosign

Cosign considered signatures valid with expired intermediate certificates when transparency log verification is skipped in github.com/sigstore/cosign...

BIT-COSIGN-2026-24122 Cosign Certificate Chain Expiry Validation Issue Allows Issuing Certificate Expiry to Be Overlooked

Cosign provides code signing and transparency for containers and binaries. In versions 3.0.4 and below, an issuing certificate with a validity that expires before the leaf certificate will be considered valid during verification even if the provided timestamp would mean the issuing certificate...

CVE-2026-24122

Cosign provides code signing and transparency for containers and binaries. In versions 3.0.4 and below, an issuing certificate with a validity that expires before the leaf certificate will be considered valid during verification even if the provided timestamp would mean the issuing certificate...

DEBIAN-CVE-2026-24122

Cosign provides code signing and transparency for containers and binaries. In versions 3.0.4 and below, an issuing certificate with a validity that expires before the leaf certificate will be considered valid during verification even if the provided timestamp would mean the issuing certificate...

CVE-2026-24122

Cosign provides code signing and transparency for containers and binaries. In versions 3.0.4 and below, an issuing certificate with a validity that expires before the leaf certificate will be considered valid during verification even if the provided timestamp would mean the issuing certificate...

CVE-2026-24122 Cosign Certificate Chain Expiry Validation Issue Allows Issuing Certificate Expiry to Be Overlooked

Cosign provides code signing and transparency for containers and binaries. In versions 3.0.4 and below, an issuing certificate with a validity that expires before the leaf certificate will be considered valid during verification even if the provided timestamp would mean the issuing certificate...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation due to improper validation of certificate chains during signature verification when transparency log verification is skipped. An attacker can cause acceptance of signatures with expired intermediate...

GHSA-WFQV-66VQ-46RM Cosign considered signatures valid with expired intermediate certificates when transparency log verification is skipped

Summary When verifying artifact signatures using a certificate, Cosign first verifies the certificate chain using the leaf certificate's "not before" timestamp and later checks expiry of the leaf certificate using either a signed timestamp provided by the Rekor transparency log or from a timestam...

Cosign considered signatures valid with expired intermediate certificates when transparency log verification is skipped

Summary When verifying artifact signatures using a certificate, Cosign first verifies the certificate chain using the leaf certificate's "not before" timestamp and later checks expiry of the leaf certificate using either a signed timestamp provided by the Rekor transparency log or from a timestam...

PT-2026-20949

Name of the Vulnerable Software and Affected Versions Cosign versions 3.0.4 and below Description Cosign is a tool that provides code signing and transparency for containers and binaries. A flaw in the certificate validation process allows expired intermediate Certificate Authorities to validate...

Inspecting the Source of Go Modules

Go has indisputably the best package integrity story of any programming language ecosystem. The Go Checksum Database guarantees that every Go client in the world is using the same source for a given Go module and version, forever. It works despite the decentralized nature of Go modules, which can...

CVE-2022-23649

Cosign provides container signing, verification, and storage in an OCI registry for the sigstore project. Prior to version 1.5.2, Cosign can be manipulated to claim that an entry for a signature exists in the Rekor transparency log even if it doesn't. This requires the attacker to have pull and...

EUVD-2022-0958

Malicious code in bioql PyPI...

BIT-COSIGN-2022-36056 Vulnerabilities with blob verification in sigstore cosign

Cosign is a project under the sigstore organization which aims to make signatures invisible infrastructure. In versions prior to 1.12.0 a number of vulnerabilities have been found in cosign verify-blob, where Cosign would successfully verify an artifact when verification should have failed. First...

GO-2022-0326 Improper certificate validation in github.com/sigstore/cosign

Cosign can be manipulated to claim that an entry for a signature in the OCI registry exists in the Rekor transparency log even if it does not. This requires the attacker to have pull and push permissions for the signature in OCI. This can happen with both standard signing with a keypair and...

CVE-2023-30551

Rekor is an open source software supply chain transparency log. Rekor prior to version 1.1.1 may crash due to out of memory OOM conditions caused by reading archive metadata files into memory without checking their sizes first. Verification of a JAR file submitted to Rekor can cause an out of...

CVE-2022-36056

Cosign is a project under the sigstore organization which aims to make signatures invisible infrastructure. In versions prior to 1.12.0 a number of vulnerabilities have been found in cosign verify-blob, where Cosign would successfully verify an artifact when verification should have failed. First...

CVE-2022-36056 Vulnerabilities with blob verification in sigstore cosign

Cosign is a project under the sigstore organization which aims to make signatures invisible infrastructure. In versions prior to 1.12.0 a number of vulnerabilities have been found in cosign verify-blob, where Cosign would successfully verify an artifact when verification should have failed. First...

CVE-2022-36056

Cosign is a project under the sigstore organization which aims to make signatures invisible infrastructure. In versions prior to 1.12.0 a number of vulnerabilities have been found in cosign verify-blob, where Cosign would successfully verify an artifact when verification should have failed. First...

GHSA-CCXC-VR6P-4858 Improper Certificate Validation in Cosign

Impact Cosign can be manipulated to claim that an entry for a signature exists in the Rekor transparency log even if it doesn't. This requires the attacker to have pull and push permissions for the signature in OCI. This can happen with both standard signing with a keypair and "keyless signing"...