Description
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, this was due to a logic flaw in the error handling of the predicate type validation. For new-format bundles, the predicate type validation was bypassed completely. This vulnerability is fixed in 3.0.6 and 2.6.3.
CVSS 4.3EPSS 0.241%Risk 0.44
View source- Published
- 2026-04-07 20:16:33
- Affected versions
- <3.0.6,<2.6.3
- Type
- Core software
- Last modified
- 2026-07-24 21:10:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N