What’s Vulnerable › Vulnerabilities

CVE-2026-73840: OpenChoreo: Unauthenticated build/workflow trigger via git-provider confusion (webhook signature bypass)

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-09-08
• Weakness: CWE-287

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.

Affected products

• openchoreo: before 1.0.3; from 1.1.0, < 1.1.3; from 1.2.0-rc.1, < 1.2.0-rc.2

References

• 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/pull/4239
• https://github.com/openchoreo/openchoreo/pull/4252
• https://github.com/openchoreo/openchoreo/pull/4253
• 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
• https://github.com/openchoreo/openchoreo/security/advisories/GHSA-c5f6-2rm9-2w8g

Get alerted when CVE-2026-73840 or the next vulnerability affects your stack