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CVE-2026-21885
Good to know:
Date: January 8, 2026
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.
Severity Score
Severity Score
Weakness Type (CWE)
Server-Side Request Forgery (SSRF)
CWE-918Top Fix
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | NONE |
| Availability (A): | NONE |