Auth bypass in Coopcycle Coopcycle-Web
CVE-2026-121945
CoopCycle coopcycle-web before 6.20.1 contains a broken access control vulnerability that allows any courier to read and modify every incident because Incident operations only check ROLE_COURIER. Attackers can enumerate sequential incident ids and use PUT /api/incidents/{id}/action to re-price, cancel or reschedule other stores' orders and tasks.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/coopcycle/coopcycle-web/issues/5390 (issue-tracking)
- hackmd.io/@hieund/coopcycle-incident-courier-cross-tenant-bola (third-party-advisory)
- github.com/coopcycle/coopcycle-web/commit/d997393d128afa1febe34e8f295b9511c12d1… (patch)
- github.com/coopcycle/coopcycle-web/blob/v6.19.1/src/Entity/Incident/Incident.php (technical-description)
- www.vulncheck.com/advisories/coopcycle-coopcycle-web-before-6.20.1-idor-via-inc… (third-party-advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
Frequently asked questions
- What is CVE-2026-121945?
- CVE-2026-121945 is a high-severity vulnerability in Coopcycle Coopcycle-Web, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.6/10. Published 2026-11-04.
- How severe is CVE-2026-121945?
- High severity. CVSS v3 base score is 7.6 out of 10.