CVE-2026-108735 PUBLISHED

Miniflux 2.3.0 through 2.3.3 contains a server-side request forgery vulnerability that allows authenticated users to reach internal addresses by setting a feed's proxy_url. Attackers can point proxy_url at loopback or internal hosts, bypassing FETCHER_ALLOW_PRIVATE_NETWORKS checks to probe internal ports and send proxy-style requests to internal services.

• HaiND from the Post and Telecommunication Institute of Technology finder

• https://hackmd.io/@haind03/miniflux-feed-proxy-url-private-network-bypass
• https://github.com/miniflux/v2/blob/c4d54f87a81b30aa173fddf05d7ff83ae7da5796/internal/reader/fetcher/request_builder.go#L155-L220
• https://github.com/miniflux/v2/blob/c4d54f87a81b30aa173fddf05d7ff83ae7da5796/internal/urllib/url.go#L64-L72
• https://github.com/miniflux/v2
• VulnCheck Advisory: Miniflux 2.3.0 through 2.3.3 SSRF via Per-Feed Proxy URL

• Server-Side Request Forgery (SSRF) CWE