CVE-2026-90535
Flowise before 3.1.4 Denial of Service via text-to-speech/abort
- State
- Published
- Severity
- 6.3 Medium
- Published
- Sep 12, 2026
- Updated
- Sep 14, 2026
- Reserved
- Sep 12, 2026
Description
Flowise versions before 3.1.4 contain an unauthenticated denial of service vulnerability in the /api/v1/text-to-speech/abort endpoint that accepts user-supplied chatflowId and chatId without ownership verification. Attackers can terminate active chatflow predictions for any user by submitting requests with known chatflow and chat identifiers, causing targeted service disruption.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
FlowiseFlowiseAI |
|
References
- GitHub Security Advisory (GHSA-xhxx-56g3-mx2r)vendor-advisory
- VulnCheck Advisory: Flowise before 3.1.4 Denial of Service via text-to-speech/abortthird-party-advisory
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