{"id":"EUVD-2026-52751","enisaUuid":"23e1e434-2be2-366d-8400-7ce707901128","description":"Flowise is a drag \u0026 drop user interface to build a customized large language model flow. Prior to 3.1.3, Flowise\u0027s 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.","datePublished":"Aug 4, 2026, 3:51:47 PM","dateUpdated":"Aug 4, 2026, 4:36:51 PM","baseScore":7.6,"baseScoreVersion":"4.0","baseScoreVector":"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","references":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5\nhttps://github.com/FlowiseAI/Flowise/pull/6431\nhttps://github.com/FlowiseAI/Flowise/commit/0fc769208395641c1411ccdb9c81416e54802155\nhttps://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3\n","aliases":"CVE-2026-69257\nGHSA-c6xh-wv4j-ppv5\n","assigner":"GitHub_M","epss":0.43,"enisaIdProduct":[{"id":"860cca82-f111-3cd0-89c9-e63ab9f3535c","product":{"name":"Flowise","vendor":{"name":"FlowiseAI"}},"product_version":"\u003c 3.1.3"}],"enisaIdVendor":[{"id":"e08e8edb-9beb-3391-ad34-768a7aeea1ad","vendor":{"name":"FlowiseAI"}}],"enisaIdVulnerability":[{"id":"120a2cb2-d71f-39d1-aeb6-b24ae01f6c28","vulnerability":{"id":"CVE-2026-69257","description":"Flowise is a drag \u0026 drop user interface to build a customized large language model flow. Prior to 3.1.3, Flowise\u0027s 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.","datePublished":"Aug 4, 2026, 3:51:47 PM","dateUpdated":"Aug 4, 2026, 4:36:51 PM","status":"PUBLISHED","baseScore":7.6,"baseScoreVersion":"4.0","baseScoreVector":"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","references":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5\nhttps://github.com/FlowiseAI/Flowise/pull/6431\nhttps://github.com/FlowiseAI/Flowise/commit/0fc769208395641c1411ccdb9c81416e54802155\nhttps://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3\n","enisa_id":"EUVD-2026-52751\n","assigner":"GitHub_M","epss":0.43,"dataProcessed":"Nov 3, 2026, 7:16:19 AM","vulnerabilityProduct":[{"id":"f6c908ec-b5d8-3a15-8433-47ecef6bed4e","product":{"name":"Flowise","vendor":{"name":"FlowiseAI"}},"product_version":"\u003c 3.1.3"}],"vulnerabilityVendor":[{"id":"7d426200-514d-3d23-b861-3a45ec1771b6","vendor":{"name":"FlowiseAI"}}]}},{"id":"8342bbc5-ade5-3a46-957e-90d93725fa55","vulnerability":{"id":"GHSA-c6xh-wv4j-ppv5","description":"Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses","datePublished":"Aug 4, 2026, 3:51:58 PM","dateUpdated":"Aug 4, 2026, 3:51:59 PM","baseScore":0.0,"references":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5\nhttps://github.com/FlowiseAI/Flowise/pull/6431\nhttps://github.com/FlowiseAI/Flowise/commit/0fc769208395641c1411ccdb9c81416e54802155\nhttps://github.com/FlowiseAI/Flowise\nhttps://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3\n","enisa_id":"EUVD-2026-52751\n","aliases":"CVE-2026-69257\nGHSA-c6xh-wv4j-ppv5\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:03:49 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}