SSRF in Miniflux
CVE-2026-108735
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind03/miniflux-feed-proxy-url-private-network-bypass (third-party-advisory)
- github.com/miniflux/v2/blob/c4d54f87a81b30aa173fddf05d7ff83ae7da5796/internal/r… (technical-description)
- github.com/miniflux/v2/blob/c4d54f87a81b30aa173fddf05d7ff83ae7da5796/internal/u… (technical-description)
- github.com/miniflux/v2 (product)
- www.vulncheck.com/advisories/miniflux-2.3.0-through-2.3.3-ssrf-via-per-feed-pro… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108735?
- CVE-2026-108735 is a medium-severity vulnerability in Miniflux, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2026-10-11.
- How severe is CVE-2026-108735?
- Medium severity. CVSS v3 base score is 4.3 out of 10.