CVE-2026-121945 json
CoopCycle coopcycle-web before 6.20.1 IDOR via Incident Resource and Action Endpoint
published 5d ago modified 5d ago also EUVD-2026-116902
- cvss
- 7.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Is CVE-2026-121945 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5d ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- hackmd.io https://hackmd.io/@hieund/cve-2026-121945-coopcycle-incident-courier-cross-tenant-bola referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.2 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L |
| CNA | 4.0 | 7.2 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- CoopCycle coopcycle-web
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/coopcycle/coopcycle-web/commit/d997393d128afa1febe34e8f295b9511c12d19a0
patch
-
hackmd.io
/@hieund/cve-2026-121945-coopcycle-incident-courier-cross-tenant-bola
exploit
-
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/blob/v6.19.1/src/Entity/Incident/Incident.php#L43-L71
technical-description
-
vulncheck.com
/advisories/coopcycle-coopcycle-web-before-6.20.1-idor-via-incident-resource-and-action-endpoint
third-party-advisory
Sources
- CVE List CVE-2026-121945
- NVD CVE-2026-121945
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.