CVE-2026-121937 | BDVDB-2026-400359 Detail
blackholllloonflow
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.
Weaknesses#
- CWE-639 Authorization Bypass Through User-Controlled Key
References#
- https://github.com/blackholll/loonflow/issues/591
- https://hackmd.io/@hieuPenguinnn/loonflow-ticket-flow-history-idor
- https://github.com/blackholll/loonflow/commit/a6495b0c2ca9e5dede8e49217a0468bcfa946de4
- https://github.com/blackholll/loonflow/blob/r3.2.2/backend/apps/ticket/views.py#L265-L286
- https://www.vulncheck.com/advisories/loonflow-before-r3-2.3-idor-via-ticket-flow-history-endpoint
- https://hackmd.io/@hieuPenguinnn/cve-2026-121937-loonflow-ticket-flow-history-idor
Exploit#
History#
- Version 1Record published in the CVE List.