{"answers":{"affected":"3 open source packages ship an affected version, including github.com/lin-snow/ech0. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33638 exists.","fix":"Upgrade github.com/lin-snow/ech0 to 1.4.8-0.20260322121226-acbf1fd71011 or later.","what":"CVE-2026-33638 is a medium-severity missing authorization vulnerability in lin-snow Ech0, published on 26 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-33638 and fix it if it is affected.\n\nWhat it is: CVE-2026-33638 is a medium-severity missing authorization vulnerability in lin-snow Ech0, published on 26 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33638 exists.\n\nAffected packages and fixed versions:\n- github.com/lin-snow/ech0 (Go): affected all versions; fixed in 1.4.8-0.20260322121226-acbf1fd71011\n- github.com/lin-snow/ech0 (Go): affected all versions; fixed in 1.4.8-0.20260322121226-acbf1fd71011\n- github.com/lin-snow/ech0 (Go): affected all versions; fixed in 1.4.8-0.20260322121226-acbf1fd71011\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-2026-33638/ (Markdown: https://insights.sbomify.com/CVE-2026-33638/index.md)","id":"CVE-2026-33638","markdown":"https://insights.sbomify.com/CVE-2026-33638/index.md","name":"CVE-2026-33638","record":{"aliases":["GHSA-m983-7426-5hrj","GO-2026-4838"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Ech0 publishing platform","requires_auth":"none","summary":"Unauthenticated attackers can access the public /api/allusers endpoint to enumerate users and view profile metadata in Ech0.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"ech0","vendor":"ech0"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to version 4.2.0, `GET /api/allusers` is mounted as a public endpoint and returns user records without authentication. This allows remote unauthenticated user enumeration and exposure of user profile metadata. A fix is available in v4.2.0.","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":"Ech0 authenticated user-list exposed data via public `/api/allusers` endpoint","id":"CVE-2026-33638","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"InvoicePlane permits DDL injection through tax_rate_decimal_places","id":"CVE-2026-33639"},"packages":[{"ecosystem":"Go","fixed":["1.4.8-0.20260322121226-acbf1fd71011"],"introduced":["0"],"last_affected":[],"package":"github.com/lin-snow/ech0","purl":null,"source":"GHSA-m983-7426-5hrj"},{"ecosystem":"Go","fixed":["1.4.8-0.20260322121226-acbf1fd71011"],"introduced":["0"],"last_affected":[],"package":"github.com/lin-snow/ech0","purl":"pkg:golang/github.com/lin-snow/ech0","source":"GHSA-m983-7426-5hrj"},{"ecosystem":"Go","fixed":["1.4.8-0.20260322121226-acbf1fd71011"],"introduced":["0"],"last_affected":[],"package":"github.com/lin-snow/ech0","purl":"pkg:golang/github.com/lin-snow/ech0","source":"GO-2026-4838"}],"prev":{"headline":"Faraday: Protocol-relative URI objects still bypass host scoping (possible incomplete fix for GHSA-33mh-2634-fwr2)","id":"CVE-2026-33637"},"products":["Ech0"],"published":"2026-03-26","related":[{"cvss_score":7.5,"headline":"Ech0 Affected by Unauthenticated Server-Side Request Forgery in Website Preview Feature","id":"CVE-2026-35036","kev_date_added":null,"published":"2026-04-06"},{"cvss_score":7.2,"headline":"Ech0 affected by unauthenticated SSRF in GetWebsiteTitle allows access to internal services and cloud metadata","id":"CVE-2026-35037","kev_date_added":null,"published":"2026-04-06"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-27","vendors":["lin-snow"]},"summary":"Unauthenticated attackers can access the public /api/allusers endpoint to enumerate users and view profile metadata in Ech0.","url":"https://insights.sbomify.com/CVE-2026-33638/"}