Vulnerability · Published Nov 4, 2026 · Assigned by VulnCheck
CVE-2026-121945CoopCycle coopcycle-web before 6.20.1 IDOR via Incident Resource and Action Endpoint
High 7.6
In plain English
A high-severity authorization bypass via user-controlled key in coopcycle-web from CoopCycle. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Severity (CVSS 3.1)7.6High
Exploit odds (30 days)0.4%top 64.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| CoopCycle | coopcycle-web | 0 – before 6.20.1 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
References
- https://github.com/coopcycle/coopcycle-web/issues/5390 issue-tracking
- https://hackmd.io/@hieund/coopcycle-incident-courier-cross-tenant-bola third-party-advisory
- https://github.com/coopcycle/coopcycle-web/commit/d997393d128afa1febe34e8f295b9511c12d19a0 patch
- https://github.com/coopcycle/coopcycle-web/blob/v6.19.1/src/Entity/Incident/Incident.php#L43-L71 technical-description
- VulnCheck Advisory: CoopCycle coopcycle-web before 6.20.1 IDOR via Incident Resource and Action Endpoint third-party-advisory
- https://hackmd.io/@hieund/cve-2026-121945-coopcycle-incident-courier-cross-tenant-bola exploit