CVE-2026-41272

Flowise: SSRF Protection Bypass (TOCTOU & Default Insecure)

State: Published
Severity: 7.1 High
Published: Apr 23, 2026
Updated: Apr 23, 2026
Reserved: Apr 18, 2026

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the core security wrappers (secureAxiosRequest and secureFetch) intended to prevent Server-Side Request Forgery (SSRF) contain multiple logic flaws. These flaws allow attackers to bypass the allow/deny lists via DNS Rebinding (Time-of-Check Time-of-Use) or by exploiting the default configuration which fails to enforce any deny list. This vulnerability is fixed in 3.1.0.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L	GitHub_M

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
FlowiseFlowiseAI	< 3.1.0Affected
flowise-componentsFlowiseAI	< 3.1.0Affected

References

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-2x8m-83vc-6wv4

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