CVE-2026-21885: GO-2026-4287 - Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources in miniflux.app

CVE-2026-21885 · Severity: low · CVSS 3.1 · Published 2026-01-12

Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources in miniflux.app

Technologies: miniflux.app (Go), miniflux.app/v2 (Go). Vendors: Go.

Quick answers

Is CVE-2026-21885 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-21885 being exploited in the wild.
How severe is CVE-2026-21885?
Low severity, with a CVSS score of 3.1, published 12 January 2026.
Which products and versions are affected?
miniflux.app (Go) SEMVER:introduced=0; miniflux.app/v2 (Go) SEMVER:introduced=0,fixed=2.2.16.
Is there a fix for CVE-2026-21885?
Yes. miniflux.app/v2 (Go): upgrade to 2.2.16 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-21885?
Check whether you run miniflux.app (Go) or miniflux.app/v2 (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • miniflux.app/v2 (Go): upgrade to 2.2.16 or later
    go get miniflux.app/v2@v2.2.16

Affected products

  • miniflux.app (Go) SEMVER:introduced=0
  • miniflux.app/v2 (Go) SEMVER:introduced=0,fixed=2.2.16

Identifiers

  • CVE-2026-21885
  • GHSA-xwh2-742g-w3wp
  • GO-2026-4287

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