{"action":"Upgrade github.com/sigstore/rekor to 1.5.0 or later.","affected":[{"fixed":"1.5.0","introduced":"0"}],"component":"github.com/sigstore/rekor","cve_ids":["CVE-2026-23831"],"ecosystem":"Go","epss":0.00426,"exploited":false,"fixed_versions":["1.5.0"],"ghsa_id":"GHSA-273p-m2cw-6833","id":"tcs_01M5KERN2YAZNZR216P3PTFJQ6","modified_at":"2026-09-10T03:50:32.343012154Z","published_at":"2026-01-22T18:41:23Z","references":["https://osv.dev/vulnerability/GHSA-273p-m2cw-6833","https://github.com/sigstore/rekor/security/advisories/GHSA-273p-m2cw-6833","https://nvd.nist.gov/vuln/detail/CVE-2026-23831","https://github.com/sigstore/rekor/commit/39bae3d192bce48ef4ef2cbd1788fb5770fee8cd","https://github.com/sigstore/rekor","https://github.com/sigstore/rekor/releases/tag/v1.5.0"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-273p-m2cw-6833","url":"https://osv.dev/vulnerability/GHSA-273p-m2cw-6833"}],"summary":"Rekor's COSE v0.0.1 entry type nil pointer dereference in Canonicalize via empty Message"}