CVE-2026-73840

MEDIUM 5.3

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

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-287 CWE-290 CWE-345
Vendor	openchoreo
Product	openchoreo
Published	Aug 13, 2026
Last Updated	Aug 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

openchoreo / openchoreo

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

References

NVD ↗ CVE.org ↗ EPSS Data ↗