Server-Side Request Forgery in Miniflux Affected by Proxy URL Configuration
CVE-2026-108735

5.3MEDIUM

Key Information:

Vendor

Miniflux

Status
Miniflux
Vendor
CVE Published:
11 October 2026

What is CVE-2026-108735?

Miniflux versions 2.3.0 through 2.3.3 are susceptible to a server-side request forgery vulnerability that enables authenticated users to manipulate the 'proxy_url' of feeds. This flaw allows attackers to direct requests to internal addresses, circumventing security checks designed to prevent access to private networks. By exploiting this vulnerability, unauthorized users can probe internal services and access sensitive information, making it critical for administrators to update their installations to secure versions.

Affected Version(s)

miniflux 2.3.0 <= 2.3.3

References

https://hackmd.io/@haind03/miniflux-feed-proxy-url-privat...
third-party-advisory
https://github.com/miniflux/v2/blob/c4d54f87a81b30aa173fd...
technical-description
https://github.com/miniflux/v2/blob/c4d54f87a81b30aa173fd...
technical-description

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

HaiND from the Post and Telecommunication Institute of Technology
.