{"cve":"CVE-2026-55185","nvd":{"published":"2026-08-21T21:17:00.563","modified":"2026-10-12T16:10:00.220","status":"Deferred","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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":5.1},"cvss_v3":null,"cwes":["CWE-601"],"references":["https://github.com/miniflux/v2/commit/c896bafdaa19c3f280b02b1059f84706495f1949","https://github.com/miniflux/v2/pull/4362","https://github.com/miniflux/v2/releases/tag/2.3.1","https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r","https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-55185","score":0.00559,"percentile":0.46252,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-m999-j542-5w3r","url":"https://osv.dev/vulnerability/GHSA-m999-j542-5w3r","summary":"Open Redirect Bypass in miniflux-v2","modified":"2026-06-25T23:11:12.425598152Z","packages":[{"ecosystem":"Go","name":"miniflux.app/v2","purl":"pkg:golang/miniflux.app/v2","ranges":["<2.3.1"],"fixed":["2.3.1"]}]},{"id":"GO-2026-5500","url":"https://osv.dev/vulnerability/GO-2026-5500","summary":"Open Redirect Bypass in miniflux-v2 in miniflux.app","modified":"2026-06-25T23:01:15.777416466Z","packages":[{"ecosystem":"Go","name":"miniflux.app","purl":"pkg:golang/miniflux.app","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"miniflux.app/v2","purl":"pkg:golang/miniflux.app/v2","ranges":["<2.3.1"],"fixed":["2.3.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}