{"id":"CVE-2023-31597","aliases":["EUVD-2023-35894","GHSA-4m8p-xfj4-439m"],"status":"published","title":"An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary...","description":"An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00425,"percentile":0.37067,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2023-05-18T00:00:00Z","modified":"2026-10-28T02:30:59Z","products":[{"vendor":"zammad","product":"zammad"}],"references":[{"url":"https://zammad.com/de/advisories/zaa-2023-03","tags":["x_transferred","Patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-31597","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4m8p-xfj4-439m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/31xxx/CVE-2023-31597.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-31597","description":"An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.","status":"published","published":"2023-05-18T00:00:00Z","modified":"2025-01-22T14:38:04.811Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:35:27.810438Z"}],"euvd":[{"id":"EUVD-2023-35894","description":"An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.","status":"published","published":"2023-05-18T00:00:00Z","modified":"2025-01-22T14:38:04Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:04:15.37855Z"}],"ghsa":[{"id":"GHSA-4m8p-xfj4-439m","title":"An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary...","description":"An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.","status":"published","published":"2023-05-18T18:30:35Z","modified":"2024-04-04T04:14:26Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:56:21.734223Z"}],"nvd":[{"id":"CVE-2023-31597","description":"An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.","status":"published","published":"2023-05-18T18:15:10.017Z","modified":"2026-06-17T05:57:13.823Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:08:03.200773Z"}],"osv":[{"id":"CVE-2023-31597","description":"An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.","status":"published","published":"2023-05-18T00:00:00Z","modified":"2026-10-28T02:30:59.280524845Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:31.790231Z"}]}}