# CVE-2026-69257

## Summary

- **CVE ID:** CVE-2026-69257
- **Severity:** HIGH
- **CVSS Score:** 7.6 (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)
- **CWE:** CWE-918, CWE-1389
- **Published:** Aug 4, 2026
- **Last Modified:** Aug 4, 2026

## 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.

## Affected Products

- FlowiseAI — Flowise (< 3.1.3)

## References

- [CNA](https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c6xh-wv4j-ppv5)
- [CNA](https://github.com/FlowiseAI/Flowise/pull/6431)
- [CNA](https://github.com/FlowiseAI/Flowise/commit/0fc769208395641c1411ccdb9c81416e54802155)
- [CNA](https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.25%
- **EPSS Percentile:** 15.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._