{"id":"CVE-2026-73840","state":"PUBLISHED","title":"OpenChoreo: Unauthenticated build/workflow trigger via git-provider confusion (webhook signature bypass)","description":"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.","publishedAt":"2026-08-13T21:52:27.798Z","updatedAt":"2026-08-14T16:26:09.846Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["openchoreo openchoreo"],"affected":[{"vendor":"openchoreo","product":"openchoreo","versions":[{"version":"< 1.0.3","status":"affected"},{"version":">= 1.1.0, < 1.1.3","status":"affected"},{"version":">= 1.2.0-rc.1, < 1.2.0-rc.2","status":"affected"}]}],"references":["https://github.com/openchoreo/openchoreo/security/advisories/GHSA-c5f6-2rm9-2w8g","https://github.com/openchoreo/openchoreo/pull/4239","https://github.com/openchoreo/openchoreo/pull/4252","https://github.com/openchoreo/openchoreo/pull/4253","https://github.com/openchoreo/openchoreo/commit/268efd9b762a3f4f72b55d9c1b13dfc55122127b","https://github.com/openchoreo/openchoreo/commit/8af4a3fc8725fc2d8a9de9611e77278a5c48f978","https://github.com/openchoreo/openchoreo/commit/f540553db7143141b73bb37fae02102e6f082a34","https://github.com/openchoreo/openchoreo/releases/tag/v1.0.3","https://github.com/openchoreo/openchoreo/releases/tag/v1.1.3","https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2"],"weaknesses":["CWE-287","CWE-290","CWE-345"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73840.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73840","state":"PUBLISHED","datePublished":"2026-08-13T21:52:27.798Z","dateUpdated":"2026-08-14T16:26:09.846Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-13T17:44:28.640Z"},"containers":{"cna":{"title":"OpenChoreo: Unauthenticated build/workflow trigger via git-provider confusion (webhook signature bypass)","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"openchoreo","product":"openchoreo","versions":[{"version":"< 1.0.3","status":"affected"},{"version":">= 1.1.0, < 1.1.3","status":"affected"},{"version":">= 1.2.0-rc.1, < 1.2.0-rc.2","status":"affected"}]}],"references":[{"url":"https://github.com/openchoreo/openchoreo/security/advisories/GHSA-c5f6-2rm9-2w8g","name":"https://github.com/openchoreo/openchoreo/security/advisories/GHSA-c5f6-2rm9-2w8g","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/openchoreo/openchoreo/pull/4239","name":"https://github.com/openchoreo/openchoreo/pull/4239","tags":["x_refsource_MISC"]},{"url":"https://github.com/openchoreo/openchoreo/pull/4252","name":"https://github.com/openchoreo/openchoreo/pull/4252","tags":["x_refsource_MISC"]},{"url":"https://github.com/openchoreo/openchoreo/pull/4253","name":"https://github.com/openchoreo/openchoreo/pull/4253","tags":["x_refsource_MISC"]},{"url":"https://github.com/openchoreo/openchoreo/commit/268efd9b762a3f4f72b55d9c1b13dfc55122127b","name":"https://github.com/openchoreo/openchoreo/commit/268efd9b762a3f4f72b55d9c1b13dfc55122127b","tags":["x_refsource_MISC"]},{"url":"https://github.com/openchoreo/openchoreo/commit/8af4a3fc8725fc2d8a9de9611e77278a5c48f978","name":"https://github.com/openchoreo/openchoreo/commit/8af4a3fc8725fc2d8a9de9611e77278a5c48f978","tags":["x_refsource_MISC"]},{"url":"https://github.com/openchoreo/openchoreo/commit/f540553db7143141b73bb37fae02102e6f082a34","name":"https://github.com/openchoreo/openchoreo/commit/f540553db7143141b73bb37fae02102e6f082a34","tags":["x_refsource_MISC"]},{"url":"https://github.com/openchoreo/openchoreo/releases/tag/v1.0.3","name":"https://github.com/openchoreo/openchoreo/releases/tag/v1.0.3","tags":["x_refsource_MISC"]},{"url":"https://github.com/openchoreo/openchoreo/releases/tag/v1.1.3","name":"https://github.com/openchoreo/openchoreo/releases/tag/v1.1.3","tags":["x_refsource_MISC"]},{"url":"https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2","name":"https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-290","lang":"en","description":"CWE-290: Authentication Bypass by Spoofing","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-345","lang":"en","description":"CWE-345: Insufficient Verification of Data Authenticity","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-13T21:52:27.995Z"},"source":{"advisory":"GHSA-c5f6-2rm9-2w8g","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-14T16:25:46.438980Z","id":"CVE-2026-73840","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-14T16:26:09.846Z"}}]}}}