{"id":"CVE-2026-73840","aliases":["GHSA-c5f6-2rm9-2w8g"],"url":"https://o3.security/vulnerability/CVE-2026-73840","summary":"OpenChoreo: Unauthenticated build/workflow trigger via git-provider confusion (webhook signature bypass)","details":"OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.3, 1.1.3, and 1.2.0-rc.2, the POST /api/v1alpha1/autobuild endpoint in internal/openchoreo-api/api/handlers/webhook_handler.go selected a webhook provider from caller-controlled X-Event-Key, accepted Bitbucket requests without HMAC-SHA256 in X-Hub-Signature or a configured bitbucket-secret, and allowed unauthenticated build triggers for components matched by repository URL and branch, including cross-provider triggers using attacker-supplied commit SHAs. This issue is fixed in versions 1.0.3, 1.1.3, and 1.2.0-rc.2.","published":"2026-08-13T21:52:27.798Z","modified":"2026-08-16T03:31:14.659014845Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Go","name":"github.com/openchoreo/openchoreo","fixedVersion":"1.0.3"},{"ecosystem":"Go","name":"github.com/openchoreo/openchoreo","fixedVersion":"1.1.3"},{"ecosystem":"Go","name":"github.com/openchoreo/openchoreo","fixedVersion":"1.2.0-rc.2"}],"fix":{"url":"https://github.com/openchoreo/openchoreo/commit/268efd9b762a3f4f72b55d9c1b13dfc55122127b","label":"openchoreo/openchoreo@268efd9"},"references":[{"type":"WEB","url":"https://github.com/openchoreo/openchoreo/releases/tag/v1.0.3"},{"type":"WEB","url":"https://github.com/openchoreo/openchoreo/releases/tag/v1.1.3"},{"type":"WEB","url":"https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73840.json"},{"type":"ADVISORY","url":"https://github.com/openchoreo/openchoreo/security/advisories/GHSA-c5f6-2rm9-2w8g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73840"},{"type":"FIX","url":"https://github.com/openchoreo/openchoreo/commit/268efd9b762a3f4f72b55d9c1b13dfc55122127b"},{"type":"FIX","url":"https://github.com/openchoreo/openchoreo/commit/8af4a3fc8725fc2d8a9de9611e77278a5c48f978"},{"type":"FIX","url":"https://github.com/openchoreo/openchoreo/commit/f540553db7143141b73bb37fae02102e6f082a34"},{"type":"FIX","url":"https://github.com/openchoreo/openchoreo/pull/4239"},{"type":"FIX","url":"https://github.com/openchoreo/openchoreo/pull/4252"},{"type":"FIX","url":"https://github.com/openchoreo/openchoreo/pull/4253"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-16T03:31:14.659014845Z"}}