{"id":"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.","aliases":["GHSA-c5f6-2rm9-2w8g"],"modified":"2026-08-16T03:31:14.659014845Z","published":"2026-08-13T21:52:27.798Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73840.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-287","CWE-290","CWE-345"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openchoreo/openchoreo","events":[{"introduced":"0"},{"introduced":"98aa8742f7244e7150cc177438d83b9efc5fdece"},{"introduced":"f2822307a9db82ee6f8f4f41b475252897b4f1a6"},{"fixed":"ab4d9b2ac7c9b4bae184b76f2107a97a07597008"},{"fixed":"6939146711434ad0f427ade431c726b960ddcec8"},{"fixed":"eecc9de11c8f9fb189a2c1f6f2a1e12b7abbdd13"},{"fixed":"268efd9b762a3f4f72b55d9c1b13dfc55122127b"},{"fixed":"8af4a3fc8725fc2d8a9de9611e77278a5c48f978"},{"fixed":"f540553db7143141b73bb37fae02102e6f082a34"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.0.3"},{"introduced":"1.1.0"},{"fixed":"1.1.3"},{"introduced":"1.2.0-rc.1"},{"fixed":"1.2.0-rc.2"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v1.0.2","v1.1.2","v1.1.1","v1.0.1","v1.1.0","v1.0.1-hotfix.1","v1.0.0","v1.0.0-rc.2","v1.0.0-rc.1","v0.17.0","v0.16.0","v0.14.0","v0.13.0","v0.12.0","v0.11.0","v0.10.0","v0.8.0","v0.7.0","v0.6.0","v0.4.0","v0.5.0","v0.3.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73840.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}