Miniflux · Miniflux · CVE-2026-21885
**Name of the Vulnerable Software and Affected Versions**
Miniflux versions prior to 2.2.16
**Description**
Miniflux is an open source feed reader. Prior to version 2.2.16, the media proxy endpoint, `GET /proxy/{encodedDigest}/{encodedURL}`, can be exploited to perform Server-Side Request Forgery (SSRF). An authenticated user can manipulate Miniflux to create a signed proxy URL for media URLs specified by the attacker within feed entry content. These URLs can include internal addresses, such as localhost, private RFC1918 ranges, or link-local metadata endpoints. Accessing the generated `/proxy/...` URL causes Miniflux to retrieve and return the response from the internal address.
**Recommendations**
Upgrade to Miniflux version 2.2.16 or later.