{"id":"DEBIAN-CVE-2026-55185","details":"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.","modified":"2026-08-27T23:06:13.317524801Z","published":"2026-08-21T21:17:00.563Z","upstream":["CVE-2026-55185"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-55185"}],"affected":[{"package":{"name":"miniflux","ecosystem":"Debian:13","purl":"pkg:deb/debian/miniflux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.10-1","2.2.11-1","2.2.12-1","2.2.13-1","2.2.16-1","2.2.16-2","2.2.19-1","2.2.19-2","2.2.6-1","2.2.6-2","2.3.0-1","2.3.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55185.json"}},{"package":{"name":"miniflux","ecosystem":"Debian:14","purl":"pkg:deb/debian/miniflux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.2-1"}]}],"versions":["2.2.10-1","2.2.11-1","2.2.12-1","2.2.13-1","2.2.16-1","2.2.16-2","2.2.19-1","2.2.19-2","2.2.6-1","2.2.6-2","2.3.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55185.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}