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.
Published: 2026-09-12
Score: 6.3 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sat, 12 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
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.
Title Flowise before 3.1.4 Denial of Service via text-to-speech/abort
First Time appeared Flowiseai
Flowiseai flowise
Weaknesses CWE-862
CPEs cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*
Vendors & Products Flowiseai
Flowiseai flowise
References
Metrics cvssV4_0

{'score': 6.3, 'vector': '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'}


Subscriptions

Flowiseai Flowise
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-12T12:08:44.062Z

Reserved: 2026-09-12T11:12:50.791Z

Link: CVE-2026-90535

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-12T13:16:51.380

Modified: 2026-09-12T13:16:51.380

Link: CVE-2026-90535

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-12T16:45:07Z

Weaknesses