{"id":"CLEANSTART-2026-JT87240","summary":"Security fix for CVE-2026-23991 applied in: cosign 2.4.3-r0, cosign 2.5.3-r0, kubescape 3.0.47-r0, kyverno-fips 1.16.3-r3, policy-controller 0.12.1-r1, sigstore-scaffolding 0.7.31-r2, tkn 0.43.2-r1, tkn-fips 0.43.0-r3","details":"CVE-2026-23991 affects multiple packages. This issue is resolved in later releases. See references for individual vulnerability details.","modified":"2026-09-18T11:46:57.397252767Z","published":"2026-09-18T10:26:10.422256Z","upstream":["CVE-2026-23991"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-JT87240.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-23991"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23991"}],"affected":[{"package":{"name":"cosign","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.3-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JT87240.json"}},{"package":{"name":"cosign","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JT87240.json"}},{"package":{"name":"kubescape","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.47-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JT87240.json"}},{"package":{"name":"kyverno-fips","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.3-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JT87240.json"}},{"package":{"name":"policy-controller","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.1-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JT87240.json"}},{"package":{"name":"sigstore-scaffolding","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.31-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JT87240.json"}},{"package":{"name":"tkn","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.43.2-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JT87240.json"}},{"package":{"name":"tkn-fips","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.43.0-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JT87240.json"}}],"schema_version":"1.9.0"}