{"id":"GHSA-wqv2-4wpg-8hc9","summary":"Miniflux has an Open Redirect via protocol-relative redirect_url","details":"### Summary\n`redirect_url` is treated as safe when `url.Parse(...).IsAbs()` is false. Protocol-relative URLs like `//ikotaslabs.com` have an empty scheme and pass that check, allowing post-login redirects to attacker-controlled sites.\n\n### Details\n- `url.Parse(\"//ikotaslabs.com\")` =\u003e empty Scheme, Host=\"ikotaslabs.com\".\n- `IsAbs()` returns false for `//ikotaslabs.com`, so the code treats it as allowed.\n- Browser resolves `//ikotaslabs.com` to current-origin scheme (e.g. `https://ikotaslabs.com`), enabling phishing flows after login.\n\n### PoC\n1. Send or visit: `http://localhost/login?redirect_url=//ikotaslabs.com`  \n2. Complete normal login flow.  \n3. After login the app redirects to `https://ikotaslabs.com` (or `http://` depending on origin).\n\n### Acknowledgements  \nThis vulnerability was discovered using the automated vulnerability analysis tools **VulScribe** and **PwnML**.   The research and tool development were conducted  with support from the **MITOU Advanced Program (未踏アドバンスト事業)**, implemented by the **Information-technology Promotion Agency (IPA), Japan**.","aliases":["CVE-2025-67713","GO-2025-4226"],"modified":"2026-02-03T06:33:27.814528Z","published":"2025-12-10T17:18:37Z","database_specific":{"github_reviewed_at":"2025-12-10T17:18:37Z","nvd_published_at":"2025-12-11T01:16:00Z","cwe_ids":["CWE-601"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/miniflux/v2/security/advisories/GHSA-wqv2-4wpg-8hc9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-67713"},{"type":"WEB","url":"https://github.com/miniflux/v2/commit/76df99f3a3db234cf6b312be5e771485213d03c7"},{"type":"PACKAGE","url":"https://github.com/miniflux/v2"}],"affected":[{"package":{"name":"miniflux.app/v2","ecosystem":"Go","purl":"pkg:golang/miniflux.app/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.15"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-wqv2-4wpg-8hc9/GHSA-wqv2-4wpg-8hc9.json","last_known_affected_version_range":"\u003c= 2.2.14"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}]}