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    CVE-2026-21885

    Miniflux 2 is an open source feed reader. Prior to version 2.2.16, Miniflux's media proxy endpoint (`GET /proxy/{encodedDigest}/{encodedURL}`) can be abused to perform Server-Side Request Forgery (SSRF). An authenticated user can cause Miniflux to generate a signed proxy URL for attacker-chosen media URLs embedded in feed entry content, including internal addresses (e.g., localhost, private RFC1918 ranges, or link-local metadata endpoints). Requesting the resulting `/proxy/...` URL makes Miniflux fetch and return the internal response. Version 2.2.16 fixes the issue.

    Published:Jan 8, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 8, 2026
    EPSS Score:0.00044
    CVSS Score:6.5

    Affected Products

    Vendor
    Miniflux Project
    Product
    Miniflux

    Exploits

    https://github.com/miniflux/v2/security/advisories/GHSA-xwh2-742g-w3wphttps://github.com/miniflux/v2/security/advisories/GHSA-xwh2-742g-w3wp

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High