{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55185","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-16T15:20:43.086Z","datePublished":"2026-08-21T20:19:14.122Z","dateUpdated":"2026-08-24T19:46:50.850Z"},"containers":{"cna":{"title":"Miniflux 2: Open Redirect Bypass","problemTypes":[{"descriptions":[{"cweId":"CWE-601","lang":"en","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.1,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r"},{"name":"https://github.com/miniflux/v2/pull/4362","tags":["x_refsource_MISC"],"url":"https://github.com/miniflux/v2/pull/4362"},{"name":"https://github.com/miniflux/v2/commit/c896bafdaa19c3f280b02b1059f84706495f1949","tags":["x_refsource_MISC"],"url":"https://github.com/miniflux/v2/commit/c896bafdaa19c3f280b02b1059f84706495f1949"},{"name":"https://github.com/miniflux/v2/releases/tag/2.3.1","tags":["x_refsource_MISC"],"url":"https://github.com/miniflux/v2/releases/tag/2.3.1"}],"affected":[{"vendor":"miniflux","product":"v2","versions":[{"version":"< 2.3.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-21T20:19:14.122Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-m999-j542-5w3r","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/miniflux/v2/security/advisories/GHSA-m999-j542-5w3r","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-24T19:46:24.951438Z","id":"CVE-2026-55185","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-24T19:46:50.850Z"}}]}}