{"answers":{"affected":"4 open source packages ship an affected version, including miniflux.app/v2 and miniflux.app. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-21885 exists.","fix":"Upgrade miniflux.app/v2 to 2.2.16 or later.","what":"CVE-2026-21885 is a medium-severity server-side request forgery vulnerability in miniflux v2, published on 8 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-21885 and fix it if it is affected.\n\nWhat it is: CVE-2026-21885 is a medium-severity server-side request forgery vulnerability in miniflux v2, published on 8 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-21885 exists.\n\nAffected packages and fixed versions:\n- miniflux.app/v2 (Go): affected all versions; fixed in 2.2.16\n- miniflux.app/v2 (Go): affected all versions; fixed in 2.2.16\n- miniflux.app/v2 (Go): affected all versions; fixed in 2.2.16\n- miniflux.app (Go): affected all versions; no fix listed\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-21885/ (Markdown: https://insights.sbomify.com/CVE-2026-21885/index.md)","id":"CVE-2026-21885","markdown":"https://insights.sbomify.com/CVE-2026-21885/index.md","name":"CVE-2026-21885","record":{"aliases":["DEBIAN-CVE-2026-21885","GHSA-xwh2-742g-w3wp","GO-2026-4287","UBUNTU-CVE-2026-21885"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Miniflux feed reader","requires_auth":"low_privilege","summary":"An authenticated user can exploit the media proxy to perform Server-Side Request Forgery, accessing internal network resources and metadata endpoints.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"miniflux","vendor":"miniflux_project"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"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.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources","id":"CVE-2026-21885","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"OpenCTI's GraphQL Mutations Allow Deletion of Unrelated Entities","id":"CVE-2026-21886"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"miniflux.app","purl":"pkg:golang/miniflux.app","source":"GO-2026-4287"},{"ecosystem":"Go","fixed":["2.2.16"],"introduced":["0"],"last_affected":[],"package":"miniflux.app/v2","purl":null,"source":"GHSA-xwh2-742g-w3wp"},{"ecosystem":"Go","fixed":["2.2.16"],"introduced":["0"],"last_affected":[],"package":"miniflux.app/v2","purl":"pkg:golang/miniflux.app/v2","source":"GHSA-xwh2-742g-w3wp"},{"ecosystem":"Go","fixed":["2.2.16"],"introduced":["0"],"last_affected":[],"package":"miniflux.app/v2","purl":"pkg:golang/miniflux.app/v2","source":"GO-2026-4287"}],"prev":{"headline":"React Router SSR XSS in ScrollRestoration","id":"CVE-2026-21884"},"products":["v2"],"published":"2026-01-08","related":[{"cvss_score":7.5,"headline":"Unauthenticated Miniflux user can bypass allowed networks check to obtain Prometheus metrics","id":"CVE-2023-27591","kev_date_added":null,"published":"2023-03-17"},{"cvss_score":5.3,"headline":"Miniflux 2 has an Open Redirect via protocol-relative `redirect_url`","id":"CVE-2025-67713","kev_date_added":null,"published":"2025-12-11"},{"cvss_score":4.8,"headline":"Stored XSS in Miniflux when opening a broken image due to unescaped ServerError in proxy handler","id":"CVE-2023-27592","kev_date_added":null,"published":"2023-03-17"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-08","vendors":["miniflux"]},"summary":"An authenticated user can exploit the media proxy to perform Server-Side Request Forgery, accessing internal network resources and metadata endpoints.","url":"https://insights.sbomify.com/CVE-2026-21885/"}