{"id":"CVE-2022-31139","aliases":["GHSA-cr6p-23cf-w9g9"],"url":"https://o3.security/vulnerability/CVE-2022-31139","summary":"No security checking for UnsafeAccess.getInstance() in UnsafeAccessor","details":"UnsafeAccessor (UA) is a bridge to access jdk.internal.misc.Unsafe & sun.misc.Unsafe. Normally, if UA is loaded as a named module, the internal data of UA is protected by JVM and others can only access UA via UA's standard API. The main application can set up `SecurityCheck.AccessLimiter` for UA to limit access to UA. Starting with version 1.4.0 and prior to version 1.7.0, when `SecurityCheck.AccessLimiter` is set up, untrusted code can access UA without limitation, even when UA is loaded as a named module. This issue does not affect those for whom `SecurityCheck.AccessLimiter` is not set up. Version 1.7.0 contains a patch.","published":"2022-07-11T18:25:11Z","modified":"2026-07-22T02:07:09.518440Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.github.karlatemp:unsafe-accessor","fixedVersion":"1.7.0"}],"fix":{"url":"https://github.com/Karlatemp/UnsafeAccessor/commit/4ef83000184e8f13239a1ea2847ee401d81585fd","label":"Karlatemp/UnsafeAccessor@4ef8300"},"references":[{"type":"WEB","url":"https://github.com/Karlatemp/UnsafeAccessor/releases/tag/1.7.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31139.json"},{"type":"ADVISORY","url":"https://github.com/Karlatemp/UnsafeAccessor/security/advisories/GHSA-cr6p-23cf-w9g9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-31139"},{"type":"FIX","url":"https://github.com/Karlatemp/UnsafeAccessor/commit/4ef83000184e8f13239a1ea2847ee401d81585fd"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-22T02:07:09.518440Z"}}