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OpenAdvisories
Medium · 6.5 CVE-2026-21885 EUVD-2026-1186GHSA-xwh2-742g-w3wpGO-2026-4287

Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources

Published Jan 8, 2026 · Updated Jan 8, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
miniflux v2 < 2.2.16 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 miniflux 2.2.16-1 —
Debian 13 miniflux No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 25.10 miniflux No fix yet —
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 26.04 LTS miniflux No fix yet —
Ubuntu Pro 24.04 LTS miniflux No fix yet —
ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1
openSUSE Leap 15.6 govulncheck-vulndb 0.0.20260114T191543-150000.1.137.1 SUSE-SU-2026:0142-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go miniflux.app all versions — GO-2026-4287
Go miniflux.app/v2 < 2.2.16 2.2.16 GHSA-xwh2-742g-w3wp

Advisories 2

References