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Vulnerability · Published Aug 13, 2026 · Assigned by GitHub_M

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

Medium 5.3

In plain English

A medium-severity improper authentication in openchoreo from openchoreo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 71.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Gogithub.com/openchoreo/openchoreo1.0.3GHSA-c5f6-2rm9-2w8g
Gogithub.com/openchoreo/openchoreo1.1.3GHSA-c5f6-2rm9-2w8g
Gogithub.com/openchoreo/openchoreo1.2.0-rc.2GHSA-c5f6-2rm9-2w8g
Gogithub.com/openchoreo/openchoreo1.0.3, 1.1.3, 1.2.0-rc.2GO-2026-6360

Affected products (as reported)

VendorProductVersions
openchoreo openchoreo < 1.0.3>= 1.1.0, < 1.1.3>= 1.2.0-rc.1, < 1.2.0-rc.2

Weakness: CWE-287, CWE-290, CWE-345 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References