CVE-2026-21885— Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources
Quick assessment
Affected
miniflux v2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Miniflux是Miniflux开源的一个极简主义的提要阅读器。 Miniflux 2 2.2.16之前版本存在安全漏洞，该漏洞源于媒体代理端点可被滥用，可能导致服务端请求伪造。
Possible ATT&CK Techniques 1 AI
T1187 · Forced Authentication
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I. Basic Information for CVE-2026-21885
Vulnerability Information
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Vulnerability Title
Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Miniflux 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Miniflux是Miniflux开源的一个极简主义的提要阅读器。 Miniflux 2 2.2.16之前版本存在安全漏洞，该漏洞源于媒体代理端点可被滥用，可能导致服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-21885
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2026-21885 (1)
IV. Related Vulnerabilities
Same product: v2
-
CVE-2026-55185
Miniflux 2: Open Redirect Bypass -
CVE-2025-67713
Miniflux 2 has an Open Redirect via protocol-relative `redir -
CVE-2025-31483
Stored XSS in Miniflux Media Proxy due to improper Content-S -
CVE-2023-27591
Unauthenticated Miniflux user can bypass allowed networks ch -
CVE-2023-27592
Stored XSS in Miniflux when opening a broken image due to un
Same vendor: miniflux
-
CVE-2026-108735
Miniflux 2.3.0 through 2.3.3 SSRF via Per-Feed Proxy URL -
CVE-2026-55185
Miniflux 2: Open Redirect Bypass -
CVE-2025-67713
Miniflux 2 has an Open Redirect via protocol-relative `redir -
CVE-2025-31483
Stored XSS in Miniflux Media Proxy due to improper Content-S -
CVE-2023-27591
Unauthenticated Miniflux user can bypass allowed networks ch
Same weakness: CWE-918
-
CVE-2026-100104
Server-Side Request Forgery (SSRF) in GitLab -
CVE-2026-89111
OAuth2 SSRF vulnerability in SAP Cloud SDK for Python -
CVE-2026-108939
EricLBuehler mistral.rs media_source.rs is_global_ip server- -
CVE-2026-109651
Frappe ERPNext before 15.112.0 Server-Side Request Forgery v -
CVE-2026-109603
Frappe Framework before 16.17.0 Authenticated SSRF and LFI v
V. Comments for CVE-2026-21885
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