CVE-2026-56275 json
Flowise - Server-Side Request Forgery via Execute Flow Base URL
published 2026-04-16 6 mo ago modified 2026-10-25 14 d ago also GHSA-9hrv-gvrv-6gf2 , EUVD-2026-38435
- cvss
- 7.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
Flowise before 3.1.0 contains a server-side request forgery vulnerability in the Execute Flow node that allows attackers to bypass security validation by providing intranet addresses through the base URL field. Attackers can initiate HTTP requests to internal network addresses, access cloud metadata, and enumerate internal services by exploiting the missing secureFetch verification in httpSecurity.ts.
Patch / fix
- npm flowise 3.1.0
- npm flowise-components 3.1.0
- Flowise Flowise 3.1.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9hrv-gvrv-6gf2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/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 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
| GitHub | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | flowise | <3.1.0 |
3.1.0 |
| npm | flowise-components | <3.1.0 |
3.1.0 |
Affected products
- Flowise Flowise
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/FlowiseAI/Flowise/security/advisories/GHSA-9hrv-gvrv-6gf2
vendor-advisory, web, exploit, third-party-advisory
-
vulncheck.com
/advisories/flowise-server-side-request-forgery-via-execute-flow-base-url
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-56275
advisory
-
github.com
/FlowiseAI/Flowise
package
Sources
- CVE List CVE-2026-56275
- GitHub Advisory GHSA-9hrv-gvrv-6gf2
- NVD CVE-2026-56275
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.