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VulnerabilityCVE-2026-73840Published 2026-08-13

CVE-2026-73840 — openchoreo

medium

As of 2026-08-14, CVE-2026-73840 is a MEDIUM-severity vulnerability in openchoreo, CVSS v3.1 5.3, EPSS 0.2% (14.8th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-73840 as of 2026-08-14; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

CVSS v3.1
5.3/10Medium
EPSS
0.2%Higher than 14.8% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
0None linked yet
Priority
3.2/10Threadlinqs triage score
Published
Updated 2026-08-14
CVSS v3.1 5.3 (MEDIUM) · EPSS 0.2% (higher than 14.8% of all scored CVEs) · Priority 3.2/10 · Published 2026-08-13

Last updated:

What is CVE-2026-73840?

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.

The record classifies CVE-2026-73840 under weakness classes CWE-287, CWE-290, CWE-345. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 53 days ago.

Severity and exploitation probability

CVSS v3.1 base score
5.3 — MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS (FIRST)
0.2% probability of exploitation in the next 30 days, higher than 14.8% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
3.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-08-13, last modified 2026-08-14

Is CVE-2026-73840 being exploited?

It currently carries a trending score of 33 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-73840

No vendor patch reference has been recorded for CVE-2026-73840 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-73840

No threat campaign in the Threadlinqs corpus currently references CVE-2026-73840, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch

Other references

Showing 6 of 10 recorded references.