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,...

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...

EUVD-2026-19919

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

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,...

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

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,...