CVE-2026-30820 json
Flowise Authorization Bypass via Spoofed x-request-from Header
published 2026-03-06 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-10107 , GHSA-wvhq-wp8g-c7vq
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm flowise 3.0.13
- flowiseai flowise 3.0.13
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 8 mo ago
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-wvhq-wp8g-c7vq referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | 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 |
| CNA | 4.0 | 8.7 | 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 |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | flowise | <3.0.13 |
3.0.13 |
Affected products
- FlowiseAI Flowise
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/FlowiseAI/Flowise/security/advisories/GHSA-wvhq-wp8g-c7vq
web, exploit, vendor-advisory
-
github.com
/FlowiseAI/Flowise/releases/tag/flowise%403.0.13
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-30820
advisory
-
github.com
/FlowiseAI/Flowise
package
Sources
- CVE List CVE-2026-30820
- GitHub Advisory GHSA-wvhq-wp8g-c7vq
- NVD CVE-2026-30820
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.