{"id":"CVE-2023-23596","aliases":["EUVD-2023-27696","GHSA-xmr7-w962-g66m"],"status":"published","title":"jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list...","description":"jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.15613,"percentile":0.96861,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2023-01-20T00:00:00Z","modified":"2026-10-28T02:30:51Z","products":[{"vendor":"jc21","product":"nginx_proxy_manager"}],"references":[{"url":"https://advisory.dw1.io/57","tags":["x_transferred","Exploit","Third Party Advisory","advisory"]},{"url":"https://github.com/NginxProxyManager/nginx-proxy-manager/blob/4f10d129c20cc82494b95cc94b97f859dbd4b54d/backend/internal/access-list.js#L510","tags":["x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23596","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xmr7-w962-g66m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/23xxx/CVE-2023-23596.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-23596","description":"jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.","status":"published","published":"2023-01-20T00:00:00Z","modified":"2025-04-03T14:42:26.783Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:35:20.812737Z"}],"euvd":[{"id":"EUVD-2023-27696","description":"jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.","status":"published","published":"2023-01-20T00:00:00Z","modified":"2025-04-03T14:42:26Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:43.853284Z"}],"ghsa":[{"id":"GHSA-xmr7-w962-g66m","title":"jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list...","description":"jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.","status":"published","published":"2023-01-20T09:30:29Z","modified":"2023-02-07T05:05:08Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:53:58.500745Z"}],"nvd":[{"id":"CVE-2023-23596","description":"jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.","status":"published","published":"2023-01-20T08:15:12.67Z","modified":"2026-06-17T05:37:32.477Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:07:45.305824Z"}],"osv":[{"id":"CVE-2023-23596","description":"jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.","status":"published","published":"2023-01-20T00:00:00Z","modified":"2026-10-28T02:30:51.422591494Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:30.709518Z"}]}}