{"id":"CVE-2026-21885","state":"PUBLISHED","title":"Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources","description":"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.","publishedAt":"2026-01-08T13:57:25.445Z","updatedAt":"2026-01-08T15:55:28.121Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["miniflux v2"],"affected":[{"vendor":"miniflux","product":"v2","versions":[{"version":"< 2.2.16","status":"affected"}]}],"references":["https://github.com/miniflux/v2/security/advisories/GHSA-xwh2-742g-w3wp"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/21xxx/CVE-2026-21885.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21885","state":"PUBLISHED","datePublished":"2026-01-08T13:57:25.445Z","dateUpdated":"2026-01-08T15:55:28.121Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-05T17:24:36.928Z"},"containers":{"cna":{"title":"Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"miniflux","product":"v2","versions":[{"version":"< 2.2.16","status":"affected"}]}],"references":[{"url":"https://github.com/miniflux/v2/security/advisories/GHSA-xwh2-742g-w3wp","name":"https://github.com/miniflux/v2/security/advisories/GHSA-xwh2-742g-w3wp","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-01-08T13:57:25.445Z"},"source":{"advisory":"GHSA-xwh2-742g-w3wp","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/miniflux/v2/security/advisories/GHSA-xwh2-742g-w3wp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-08T14:52:34.949191Z","id":"CVE-2026-21885","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-08T15:55:28.121Z"}}]}}}