CVE-2026-30820
published 2026-03-07CVE-2026-30820: 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…
PriorityP260high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.48%
37.6th percentile
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
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| flowiseai | flowise | < 3.0.13 | 3.0.13 |
| flowiseai | flowise | >= 0 < 3.0.13 | 3.0.13 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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
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OSV
Flowise has Authorization Bypass via Spoofed x-request-from Header
osv·2026-03-06
CVE-2026-30820 [HIGH] Flowise has Authorization Bypass via Spoofed x-request-from Header
Flowise has Authorization Bypass via Spoofed x-request-from Header
### Summary
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 privileges.
### Details
The global middleware that guards `/api/v1` routes lives in `external/Flowise/packages/server/src/index.ts:214`. After filtering out the whitelist, the logic short-circuits on the spoofable header:
```javascript
if (isWhitelisted) {
next();
} else if (req.headers['x-request-from'] === 'internal') {
verifyToken(req, res, next);
GHSA
Flowise has Authorization Bypass via Spoofed x-request-from Header
ghsa·2026-03-06
CVE-2026-30820 [HIGH] CWE-863 Flowise has Authorization Bypass via Spoofed x-request-from Header
Flowise has Authorization Bypass via Spoofed x-request-from Header
### Summary
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 privileges.
### Details
The global middleware that guards `/api/v1` routes lives in `external/Flowise/packages/server/src/index.ts:214`. After filtering out the whitelist, the logic short-circuits on the spoofable header:
```javascript
if (isWhitelisted) {
next();
} else if (req.headers['x-request-from'] === 'internal') {
verifyToken(req, res, next);
No detection rules found.
No public exploits indexed.
2026-03-07
Published