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CVE-2026-55185 Details

Description

Miniflux 2 is an open source feed reader. Prior to 2.3.1, IsRelativePath in internal/urllib/url.go accepts redirect targets containing backslashes because Go URL parsing treats them as path characters. Browser backslash normalization converts them to forward slashes. An unauthenticated attacker can provide such a redirect_url value to the login flow, bypass the relative-path and host checks, and redirect a victim to an attacker-controlled external site. This issue is fixed in version 2.3.1.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r	CISA-ADP
https://github.com/miniflux/v2/commit/c896bafdaa19c3f280b02b1059f84706495f1949	[email protected]
https://github.com/miniflux/v2/pull/4362	[email protected]
https://github.com/miniflux/v2/releases/tag/2.3.1	[email protected]
https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-601	URL Redirection to Untrusted Site ('Open Redirect')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Aug 24, 2026	CVE Modified	CISA-ADP
Aug 21, 2026	New CVE Received	[email protected]