← CVE Radar
CVE-2026-121937loonflow before r3.2.3 IDOR via ticket_flow_history Endpoint
loonflow before r3.2.3 contains a missing authorization vulnerability in TicketFlowHistoryView that allows any authenticated user to read other users' ticket flow history by supplying a ticket UUID. Attackers can request the ticket_flow_history endpoint, which skips ticket_view_permission_check, to obtain approval comments and processor names, emails and phone numbers.
2.3 LOWEPSS 0.32%Not in KEVNVD: Received
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 2.3 | LOW | 4.0VulnCheck (CNA) | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| 3.1 | LOW | 3.1VulnCheck (CNA) | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
Details
- CVE ID
- CVE-2026-121937
- Status
- Received
- Assigner (CNA)
- VulnCheck
- Published
- Nov 4, 2026
- Last modified
- 2026-11-04 19:17 UTC
- Weaknesses
- CWE-639 · Authorization Bypass Through User-Controlled Key
Affected Products
As published by the CNA in the CVE record.
blackholllloonflow1 version range
- before r3.2.3
References
- github.com https://github.com/blackholll/loonflow/blob/r3.2.2/backend/apps/ticket/views.py#L265-L286
- github.com https://github.com/blackholll/loonflow/commit/a6495b0c2ca9e5dede8e49217a0468bcfa946de4
- github.com https://github.com/blackholll/loonflow/issues/591
- hackmd.io https://hackmd.io/@hieuPenguinnn/loonflow-ticket-flow-history-idor
- vulncheck.com https://www.vulncheck.com/advisories/loonflow-before-r3-2.3-idor-via-ticket-flow-history-endpoint
- hackmd.io https://hackmd.io/@hieuPenguinnn/cve-2026-121937-loonflow-ticket-flow-history-idor