HIGH

CVE-2026-69257

Flowiseai Flowise 2026-08-04 CVSS v3.1

CVSS

8.6

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, Flowise's HTTP security module httpSecurity.ts did not normalize IPv4-mapped IPv6 addresses such as ::ffff:127.0.0.1 and ::ffff:169.254.169.254 before checking them against the deny list. Because ipaddr.js reports these addresses as ipv6 while IPv4 CIDR deny-list entries are ipv4, isDeniedIP() skipped the IPv4 CIDR checks. An attacker who controls DNS resolution for a hostname used by the HTTP Node, API Chain, Document Loader, MCP tool, or other paths using secureAxiosRequest(), secureFetch(), or checkDenyList() could return a AAAA record for an IPv4-mapped target and cause requests to reach localhost, internal services, or cloud metadata endpoints. This issue is fixed in version 3.1.3.

Weakness (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

CWE-1389

EPSS Score

0.28%

Probability of exploitation in next 30 days

20.7th percentile

References

https://github.com/FlowiseAI/Flowise/commit/0fc769208395641c1411ccdb9c81416e54802155 Patch https://github.com/FlowiseAI/Flowise/pull/6431 Issue Tracking, Patch https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3 Patch, Release Notes https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5 Exploit, Mitigation, Vendor Advisory

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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