{"id":"EUVD-2026-52751","revision":"86e55ffa37c24c7bbd1caacc1470fda3","records":[{"revision":"86e55ffa37c24c7bbd1caacc1470fda3","observedAt":"2026-11-03T13:00:30.856+00:00","statement":{"source":"euvd","id":"EUVD-2026-52751","aliases":["CVE-2026-69257","GHSA-c6xh-wv4j-ppv5"],"title":"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…","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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","score":7.6,"severity":null}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5","https://github.com/FlowiseAI/Flowise/pull/6431","https://github.com/FlowiseAI/Flowise/commit/0fc769208395641c1411ccdb9c81416e54802155","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-52751","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 4, 2026, 3:51:47 PM","dateUpdated":"Aug 4, 2026, 4:36:51 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-52751","identifiers":["EUVD-2026-52751","CVE-2026-69257","GHSA-c6xh-wv4j-ppv5"]},"retained":false,"historicalAffected":[]}],"coverage":[]}