VULNERABILITY INTELLIGENCE
CVE-2026-55185
EPSS probability0.56%
CISA KEVNot currently listed
Published2026-08-21
Last modified2026-10-12
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.
Weakness classification
- security-advisories@github.com: CWE-601