{"id":"CVE-2025-67713","aliases":["GHSA-wqv2-4wpg-8hc9","GO-2025-4226"],"url":"https://o3.security/vulnerability/CVE-2025-67713","summary":"Miniflux 2 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\")` => 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**.","published":"2025-12-11T00:17:00.282Z","modified":"2026-08-12T03:51:41.594621110Z","cvss":null,"epss":{"score":0.00221,"percentile":0.12789,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"miniflux.app/v2","fixedVersion":"2.2.15"}],"fix":{"url":"https://github.com/miniflux/v2/commit/76df99f3a3db234cf6b312be5e771485213d03c7","label":"miniflux/v2@76df99f"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/67xxx/CVE-2025-67713.json"},{"type":"ADVISORY","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":"FIX","url":"https://github.com/miniflux/v2/commit/76df99f3a3db234cf6b312be5e771485213d03c7"},{"type":"PACKAGE","url":"https://github.com/miniflux/v2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:41.594621110Z"}}