Sigstore Cosign Bypass Security Restrictions

The vulnerability in the cosign verify-blob and cosign verify-blob-attestation commands of the Sigstore Cosign digital signature tool is related to errors in the certificate verification process, allowing a remote attacker to bypass security restrictions...

PT-2026-135975

Уязвимость команд cosign verify-blob и cosign verify-blob-attestation инструмента для цифровой подписи Sigstore Cosign, связана с ошибками процедуры подтверждения подлинности сертификата, позволяющая нарушителю, действующему удаленно, обойти ограничения безопасности...

BIT-COSIGN-2026-39395 Cosign's verify-blob-attestation reports false positive when payload parsing fails

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

EUVD-2026-19919

Cosign's verify-blob-attestation reports false positive when payload parsing fails...

Cosign's verify-blob-attestation reports false positive when payload parsing fails

Description cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures, this was due to a logic flaw in the error handling of the predicate type validation. For...

Missing Report of Error Condition

Overview Affected versions of this package are vulnerable to Missing Report of Error Condition in the verify-blob-attestation module when used without --check-claims flag. An attacker can cause the system to incorrectly report successful verification of attestations with malformed payloads or...

Missing Report of Error Condition

Overview github.com/sigstore/cosign/cmd/cosign/cli/verify is a package that aims to make signatures invisible infrastructure. Affected versions of this package are vulnerable to Missing Report of Error Condition in the verify-blob-attestation module when used without --check-claims flag. An...

Missing Report of Error Condition

Overview Affected versions of this package are vulnerable to Missing Report of Error Condition in the verify-blob-attestation module when used without --check-claims flag. An attacker can cause the system to incorrectly report successful verification of attestations with malformed payloads or...

DEBIAN-CVE-2026-39395

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

ALPINE-CVE-2026-39395

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

UBUNTU-CVE-2026-39395

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

CVE-2026-39395

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

CVE-2026-39395

CVE-2026-39395 affects Cosign prior to 3.0.6 and 2.6.3, where verify-blob-attestation could erroneously report a Verified OK result for attestations with malformed payloads or mismatched predicate types. The root causes differ by bundle format: old-format bundles had a logic flaw in error handlin...

CVE-2026-39395

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

CVE-2026-39395 Cosign's verify-blob-attestation reports false positive when payload parsing fails

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

CVE-2026-39395

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

CVE-2026-39395 Cosign's verify-blob-attestation reports false positive when payload parsing fails

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...

CVE-2026-39395: Improper Check for Unusual or Exceptional Conditions

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures,...