{"id":"CVE-2021-29452","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-29452","generatedAt":"2026-10-28T06:36:05.934Z","title":"A new HAL-Form was added to allow editing users in version 0.18.0.","description":"a12n-server is an npm package which aims to provide a simple authentication system. A new HAL-Form was added to allow editing users in version 0.18.0. This feature should only have been accessible to admins. Unfortunately, privileges were incorrectly checked allowing any logged in user to make this change. Patched in v0.18.2.","published":"2021-04-16T22:15:14.000Z","lastModified":"2026-06-17T03:47:40.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-269","CWE-863"],"affected":["curveballjs/a12n-server"],"epss":{"score":0.00781,"percentile":0.55739,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.78%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/curveball/a12n-server/security/advisories/GHSA-8hw9-22v6-9jr9","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://www.npmjs.com/package/%40curveball/a12n-server","source":"security-advisories@github.com"},{"url":"https://github.com/curveball/a12n-server/security/advisories/GHSA-8hw9-22v6-9jr9","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.npmjs.com/package/%40curveball/a12n-server","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-29452","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}