CVE-2026-69257
Published: Tue, 04 Aug 2026 17:17
Summary
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 suc
Details
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.
Are YOU affected by CVE-2026-69257?
5-second check on your actual server. Reads /etc/os-release, uname -r, and dpkg-query; matches against the live USN + Debian Security Tracker feeds; tells you whether CVE-2026-69257 (and any other live CVE) applies. Anonymous, no signup.
curl https://mindsparkstack.com/scan.sh | bash
References
- https://github.com/FlowiseAI/Flowise/commit/0fc769208395641c1411ccdb9c81416e54802155
- https://github.com/FlowiseAI/Flowise/pull/6431
- https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5
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