{"action":"Upgrade github.com/zitadel/zitadel to 1.80.0-v2.20.0.20260216092519-feab8e1fa371 or later.","affected":[{"fixed":"4.11.0","introduced":"4.0.0"},{"fixed":"3.4.7","introduced":"3.0.0"},{"introduced":"2.31.0","last_affected":"2.71.19"},{"fixed":"1.80.0-v2.20.0.20260216092519-feab8e1fa371","introduced":"0"}],"component":"github.com/zitadel/zitadel","cve_ids":["CVE-2026-27840"],"ecosystem":"Go","epss":0.00252,"exploited":false,"fixed_versions":["4.11.0","3.4.7","1.80.0-v2.20.0.20260216092519-feab8e1fa371"],"ghsa_id":"GHSA-6mq3-xmgp-pjm5","id":"tcs_01M5KF0FM12BSGHSVEHPRMBKST","modified_at":"2026-03-23T04:56:27.999492675Z","published_at":"2026-02-27T21:22:00Z","references":["https://osv.dev/vulnerability/GHSA-6mq3-xmgp-pjm5","https://github.com/zitadel/zitadel/security/advisories/GHSA-6mq3-xmgp-pjm5","https://nvd.nist.gov/vuln/detail/CVE-2026-27840","https://github.com/zitadel/zitadel/commit/feab8e1fa371f3ad654640fc869b2c14f2fdb602","https://github.com/zitadel/zitadel","https://github.com/zitadel/zitadel/releases/tag/v2.71.19","https://github.com/zitadel/zitadel/releases/tag/v3.4.7","https://github.com/zitadel/zitadel/releases/tag/v4.11.0"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-6mq3-xmgp-pjm5","url":"https://osv.dev/vulnerability/GHSA-6mq3-xmgp-pjm5"}],"summary":"ZITADEL's truncated opaque tokens are still valid"}