PT-2026-90640 · Flowiseai · Flowise

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CVE-2026-90535

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Published

2026-09-12

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Updated

2026-09-12

CVSS v4.0

6.3

Medium

VectorAV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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.

Fix

Missing Authorization

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Weakness Enumeration

Related Identifiers

CVE-2026-90535

Affected Products

Flowise