Vulnerability · Published Mar 7, 2026 · Assigned by GitHub_M

CVE-2026-30820Flowise Authorization Bypass via Spoofed x-request-from Header

High 8.7

In plain English

A high-severity incorrect authorization in Flowise from FlowiseAI. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.5%top 54.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, Flowise trusts any HTTP client that sets the header x-request-from: internal, allowing an authenticated tenant session to bypass all /api/v1/** authorization checks. With only a browser cookie, a low-privilege tenant can invoke internal administration endpoints (API key management, credential stores, custom function execution, etc.), effectively escalating privilege. This issue has been patched in version 3.0.13.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	flowise	3.0.13	GHSA-wvhq-wp8g-c7vq

Affected products (as reported)

Vendor	Product	Versions
FlowiseAI	Flowise	< 3.0.13

Weakness: CWE-863 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-wvhq-wp8g-c7vq x_refsource_CONFIRM
https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.0.13 x_refsource_MISC