CVE-2026-108735
MEDIUM
NVD
CVSS Score
4.3
Severity
MEDIUM
Published
Oct 11, 2026
Vendor
unknown
Description
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.
References
- https://github.com/miniflux/v2
- 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://hackmd.io/@haind03/miniflux-feed-proxy-url-private-network-bypass
- https://www.vulncheck.com/advisories/miniflux-2.3.0-through-2.3.3-ssrf-via-per-feed-proxy-url