{"answers":{"affected":"4 open source packages ship an affected version, including miniflux.app and miniflux.app/v2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-27591 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2023-27591 is a high-severity authentication bypass vulnerability in miniflux v2, published on 17 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-27591 and fix it if it is affected.\n\nWhat it is: CVE-2023-27591 is a high-severity authentication bypass vulnerability in miniflux v2, published on 17 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-27591 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- miniflux.app (Go): affected all versions up to 1.0.46; no fix listed\n- miniflux.app (Go): affected all versions up to 1.0.46; no fix listed\n- miniflux.app/v2 (Go): affected all versions; fixed in 2.0.43\n- miniflux.app/v2 (Go): affected all versions; fixed in 2.0.43\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-2023-27591/ (Markdown: https://insights.sbomify.com/CVE-2023-27591/index.md)","id":"CVE-2023-27591","markdown":"https://insights.sbomify.com/CVE-2023-27591/index.md","name":"CVE-2023-27591","record":{"aliases":["GHSA-3qjf-qh38-x73v"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Miniflux feed reader","requires_auth":"none","summary":"Unauthenticated attackers can bypass network restrictions to access Prometheus metrics in Miniflux when the metrics collector is enabled.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"miniflux","vendor":"miniflux_project"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"},{"id":"CWE-1220","name":"Insufficient Granularity of Access Control"}],"description":"Miniflux is a feed reader. Prior to version 2.0.43, an unauthenticated user can retrieve Prometheus metrics from a publicly reachable Miniflux instance where the `METRICS_COLLECTOR` configuration option is enabled and `METRICS_ALLOWED_NETWORKS` is set to `127.0.0.1/8` (the default). A patch is available in Miniflux 2.0.43. As a workaround, set `METRICS_COLLECTOR` to `false` (default) or run Miniflux behind a trusted reverse-proxy.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Unauthenticated Miniflux user can bypass allowed networks check to obtain Prometheus metrics","id":"CVE-2023-27591","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2023"},"n_packages":4,"n_references":4,"next":{"headline":"Stored XSS in Miniflux when opening a broken image due to unescaped ServerError in proxy handler","id":"CVE-2023-27592"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.0.46"],"package":"miniflux.app","purl":null,"source":"GHSA-3qjf-qh38-x73v"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.0.46"],"package":"miniflux.app","purl":"pkg:golang/miniflux.app","source":"GHSA-3qjf-qh38-x73v"},{"ecosystem":"Go","fixed":["2.0.43"],"introduced":["0"],"last_affected":[],"package":"miniflux.app/v2","purl":null,"source":"GHSA-3qjf-qh38-x73v"},{"ecosystem":"Go","fixed":["2.0.43"],"introduced":["0"],"last_affected":[],"package":"miniflux.app/v2","purl":"pkg:golang/miniflux.app/v2","source":"GHSA-3qjf-qh38-x73v"}],"prev":{"headline":"Rizin has stack-based buffer overflow when parsing GDB registers profile files","id":"CVE-2023-27590"},"products":["v2"],"published":"2023-03-17","related":[{"cvss_score":6.5,"headline":"Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources","id":"CVE-2026-21885","kev_date_added":null,"published":"2026-01-08"},{"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":"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-25","vendors":["miniflux"]},"summary":"Unauthenticated attackers can bypass network restrictions to access Prometheus metrics in Miniflux when the metrics collector is enabled.","url":"https://insights.sbomify.com/CVE-2023-27591/"}