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CVE

CVE-2026-30820

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

CVE-2026-30820

Flowise Authorization Bypass via Spoofed x-request-from Header

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.7
-
4.0
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/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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.0.13, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30820.json, https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-wvhq-wp8g-c7vq, https://nvd.nist.gov/vuln/detail/CVE-2026-30820

Severity

0

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
0
EPSS Probability
0.00133%
EPSS Percentile
0.32429%
Introduced Version
0
Fix Available
f0c1294173a55f26e0b972c39c0c16917f5ca9e7

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