{"id":"CVE-2023-22899","aliases":["GHSA-2pj2-gchf-wmw7"],"url":"https://o3.security/vulnerability/CVE-2023-22899","summary":"Zip4j Origin Validation Error","details":"Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.","published":"2023-01-10T00:00:00Z","modified":"2026-07-15T01:48:51.175217707Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":2,"affectedPackages":[{"ecosystem":"Maven","name":"net.lingala.zip4j:zip4j","fixedVersion":"2.11.3"}],"fix":null,"references":[{"type":"WEB","url":"https://breakingthe3ma.app"},{"type":"WEB","url":"https://breakingthe3ma.app/files/Threema-PST22.pdf"},{"type":"WEB","url":"https://news.ycombinator.com/item?id=34316206"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/22xxx/CVE-2023-22899.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22899"},{"type":"REPORT","url":"https://github.com/srikanth-lingala/zip4j/issues/485"},{"type":"PACKAGE","url":"https://github.com/srikanth-lingala/zip4j/releases"},{"type":"ARTICLE","url":"https://threema.ch/en/blog/posts/news-alleged-weaknesses-statement"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:51.175217707Z"}}