CVE-2026-69257

UNKNOWN 0.0

Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918 CWE-1389
Vendor	flowiseai
Product	flowise
Published	Aug 4, 2026
Last Updated	Aug 4, 2026

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Affected Versions

FlowiseAI / Flowise

< 3.1.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5 github.com: https://github.com/FlowiseAI/Flowise/pull/6431 github.com: https://github.com/FlowiseAI/Flowise/commit/0fc769208395641c1411ccdb9c81416e54802155 github.com: https://github.com/FlowiseAI/Flowise/releases/tag/[email protected]