CVE-2026-69257: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.…
- Occurred
- Aug 4, 2026
- Published
- Aug 4, 2026
- Source
- NVD CVE
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 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.
Tags
- CVE
- CVE-2026-69257
- cvss:HIGH
Classification
Rationale: CVE describes a security vulnerability allowing unauthorized access to internal services and cloud metadata endpoints via IP address bypass.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8