medium5.1
CVE-2026-55185
Miniflux 2 is an open source feed reader.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | miniflux.app/v2 | <= 2.3.0 | 2.3.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-m999-j542-5w3r
- https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r
- https://github.com/miniflux/v2/commit/c896bafdaa19c3f280b02b1059f84706495f1949
- https://github.com/miniflux/v2/pull/4362
- https://github.com/miniflux/v2/releases/tag/2.3.1