loonflow before r3.2.3 contains a missing authorization vulnerability in TicketFlowHistoryView that allows any
Source GCVE Database
Not known to be exploited · CVSS 2.3 Low : upgrade to r3.2.3 when convenient.
Data as of 4 Nov 2026, 16:43 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 2.3 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 3.1 |
- Patch
- Available – fixed in r3.2.3
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 4 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.
What to do
Upgrade loonflow to r3.2.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| blackholllloonflow | Affected
| Fixed in
|
GitHubloonflowpkg:github/loonflowOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in loonflow version r3.2.3 and later. Users should upgrade to version r3.2.3 or newer to remediate this vulnerability. No vendor advisory content was provided to indicate alternative mitigations or temporary workarounds.
Description
loonflow versions before r3.2.3 have a missing authorization vulnerability in the TicketFlowHistoryView component. This flaw allows any authenticated user to access other users' ticket flow history by providing a ticket UUID. Exploiting this issue, attackers can retrieve sensitive information such as approval comments and processor contact details without proper permission checks.
References
- nvd.nist.gov/vuln/detail/CVE-2026-121937 (opens in a new tab)
- github.com/blackholll/loonflow/issues/591 (opens in a new tab)
- github.com/blackholll/loonflow/commit/a6495b0c2ca9e5dede8e49217a0468bcfa946de4 (opens in a new tab)
- github.com/blackholll/loonflow/blob/r3.2.2/backend/apps/ticket/views.py (opens in a new tab)
- hackmd.io/@hieuPenguinnn/loonflow-ticket-flow-history-idor (opens in a new tab)
- vulncheck.com/advisories/loonflow-before-r3-2.3-idor-via-ticket-flow-history-endpoint (opens in a new tab)