CVE-2026-73840
OpenChoreo: Unauthenticated build/workflow trigger via git-provider confusion (webhook signature bypass)
- State
- Published
- Severity
- 5.3 Medium
- Published
- Aug 13, 2026
- Updated
- Aug 14, 2026
- Reserved
- Aug 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
openchoreoopenchoreo |
|
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
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.