High
Flowise: Unauthenticated TTS endpoint accepts arbitrary credential IDs — enables API credit abuse via stored credentials
Type: advisorySources: OSV
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the text-to-speech generation endpoint (POST /api/v1/text-to-speech/generate) is whitelisted (no auth) and accepts a credentialId directly in the request body. When called without a chatflowId, the endpoint uses the provided credentialId to decrypt the stored credential (e.g., OpenAI or ElevenLabs API key) and generate speech. This vulnerability is fixed in 3.1.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-41279
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 05:54 UTC · Revision 1
Source evidence
Flowise: Unauthenticated TTS endpoint accepts arbitrary credential IDs — enables API credit abuse via stored credentials
core-osv · Original sourcePublished 23 Apr 2026, 19:53 UTC
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the text-to-speech generation endpoint (POST /api/v1/text-to-speech/generate) is whitelisted (no auth) and accepts a credentialId directly in the request body. When called without a chatflowId, the endpoint uses the provided credentialId to decrypt the stored credential (e.g., OpenAI or ElevenLabs API key) and generate speech. This vulnerability is fixed in 3.1.0.
osv:CVE-2026-41279
Complete source record
{
"id": "0b2c6035cdbbbf07472ec257cc8b24a84829359a582b8460d397e202114cebb8",
"url": "https://osv.dev/vulnerability/CVE-2026-41279",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Flowise: Unauthenticated TTS endpoint accepts arbitrary credential IDs — enables API credit abuse via stored credentials",
"summary": "Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the text-to-speech generation endpoint (POST /api/v1/text-to-speech/generate) is whitelisted (no auth) and accepts a credentialId directly in the request body. When called without a chatflowId, the endpoint uses the provided credentialId to decrypt the stored credential (e.g., OpenAI or ElevenLabs API key) and generate speech. This vulnerability is fixed in 3.1.0.",
"evidence": "osv:CVE-2026-41279",
"products": [],
"severity": "high",
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"database_specific": {
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],
"modified": "2026-10-28T02:30:26.154200563Z",
"provider": "osv",
"references": [
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"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5fw2-mwhh-9947",
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},
"source_id": "core-osv",
"document_id": 492876,
"published_at": "2026-04-23T19:53:15.237+00:00"
}