{"id":"UBUNTU-CVE-2026-21885","details":"Miniflux 2 is an open source feed reader. Prior to version 2.2.16, Miniflux's media proxy endpoint (`GET /proxy/{encodedDigest}/{encodedURL}`) can be abused to perform Server-Side Request Forgery (SSRF). An authenticated user can cause Miniflux to generate a signed proxy URL for attacker-chosen media URLs embedded in feed entry content, including internal addresses (e.g., localhost, private RFC1918 ranges, or link-local metadata endpoints). Requesting the resulting `/proxy/...` URL makes Miniflux fetch and return the internal response. Version 2.2.16 fixes the issue.","modified":"2026-07-02T18:02:23.300529280Z","published":"2026-01-08T14:15:00Z","upstream":["CVE-2026-21885"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-21885"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-21885"},{"type":"REPORT","url":"https://github.com/miniflux/v2/security/advisories/GHSA-xwh2-742g-w3wp"}],"affected":[{"package":{"name":"miniflux","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/miniflux?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.51-1","2.0.51-2","2.0.51-2ubuntu0.1","2.0.51-2ubuntu0.2","2.0.51-2ubuntu0.2+esm1","2.0.51-2ubuntu0.3","2.0.51-2ubuntu0.3+esm1","2.0.51-2ubuntu0.3+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"miniflux","binary_version":"2.0.51-2ubuntu0.3+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21885.json"}},{"package":{"name":"miniflux","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/miniflux?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.6-1","2.2.6-2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.2.6-2","binary_name":"miniflux"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21885.json"}},{"package":{"name":"miniflux","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/miniflux?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.6-2","2.2.13-1","2.2.16-2","2.2.16-2ubuntu0.26.04.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.2.16-2ubuntu0.26.04.1~esm1","binary_name":"miniflux"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21885.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}