ALPINE-CVE-2026-39395

Source
https://security.alpinelinux.org/vuln/CVE-2026-39395
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39395.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-39395
Upstream
Published
2026-04-07T20:16:33Z
Modified
2026-11-03T06:32:55Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Alpine:v3.23 / cosign

Package

Name
cosign
Purl
pkg:apk/alpine/cosign?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.0.0
Fixed
2.6.3-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39395.json"

Alpine:v3.24 / cosign

Package

Name
cosign
Purl
pkg:apk/alpine/cosign?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.0.0
Fixed
3.0.6-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39395.json"