CVE-2026-70478

Affects: large language model

CVSS: CRITICAL · 10v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published: 2026-08-04
Weakness: CWE-200
Source: nvd.nist.gov/vuln/detail/CVE-2026-70478

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST /api/v1/oauth2-credential/refresh/:credentialId endpoint is included in WHITELIST_URLS and requires no authentication. The endpoint decrypts the stored credential, sends a refresh request to the configured OAuth provider with the client secret and refresh token, and returns the refreshed access_token in the response body. An attacker with a credential ID can use the token to access the victim’s connected service and can also exhaust refresh-token quota. This issue is fixed in 3.1.3.

References

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