{"id":"CVE-2026-78189","aliases":["EUVD-2026-114715","GHSA-vhwh-fhm6-mq7v"],"status":"published","title":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback","description":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback.\n\nWhen a request matches no file, the PSGI handler retries it as an API route through api_filename. That keeps .. segments in the request path and only checks that the joined path starts with the document root, which a request for /../private passes.\n\nA remote attacker can run the embedded Perl in any .psp file the server can read, such as one uploaded to a directory outside the document root.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00614,"percentile":0.49773,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2026-10-31T14:33:55Z","modified":"2026-11-06T14:35:24Z","references":[{"url":"https://metacpan.org/release/ASPEER/WebDyne-3.022/changes","tags":["release-notes","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78189","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vhwh-fhm6-mq7v"},{"url":"https://cpan.org/modules","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78189.json","tags":["advisory"]},{"url":"https://github.com/aspeer/WebDyne","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-78189","title":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback","description":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback.\n\nWhen a request matches no file, the PSGI handler retries it as an API route through api_filename. That keeps .. segments in the request path and only checks that the joined path starts with the document root, which a request for /../private passes.\n\nA remote attacker can run the embedded Perl in any .psp file the server can read, such as one uploaded to a directory outside the document root.","status":"published","published":"2026-10-31T14:33:55.211Z","modified":"2026-11-06T14:35:24.873Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-22"],"updated_at":"2026-11-06T15:28:32.799664Z"}],"euvd":[{"id":"EUVD-2026-114715","description":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback.\n\nWhen a request matches no file, the PSGI handler retries it as an API route through api_filename. That keeps .. segments in the request path and only checks that the joined path starts with the document root, which a request for /../private passes.\n\nA remote attacker can run the embedded Perl in any .psp file the server can read, such as one uploaded to a directory outside the document root.","status":"published","published":"2026-10-31T14:33:55Z","modified":"2026-11-06T14:35:24Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-06T16:05:20.816071Z"}],"ghsa":[{"id":"GHSA-vhwh-fhm6-mq7v","title":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root...","description":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback.\n\nWhen a request matches no file, the PSGI handler retries it as an API route through api_filename. That keeps .. segments in the request path and only checks that the joined path starts with the document root, which a request for /../private passes.\n\nA remote attacker can run the embedded Perl in any .psp file the server can read, such as one uploaded to a directory outside the document root.","status":"published","published":"2026-10-31T15:30:23Z","modified":"2026-11-06T15:32:26Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-22"],"updated_at":"2026-11-06T16:00:41.773289Z"}],"nvd":[{"id":"CVE-2026-78189","description":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback.\n\nWhen a request matches no file, the PSGI handler retries it as an API route through api_filename. That keeps .. segments in the request path and only checks that the joined path starts with the document root, which a request for /../private passes.\n\nA remote attacker can run the embedded Perl in any .psp file the server can read, such as one uploaded to a directory outside the document root.","status":"published","published":"2026-10-31T15:16:54.003Z","modified":"2026-11-06T15:17:22.95Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-06T18:00:55.423579Z"}],"osv":[{"id":"CVE-2026-78189","title":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback","description":"WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallback.\n\nWhen a request matches no file, the PSGI handler retries it as an API route through api_filename. That keeps .. segments in the request path and only checks that the joined path starts with the document root, which a request for /../private passes.\n\nA remote attacker can run the embedded Perl in any .psp file the server can read, such as one uploaded to a directory outside the document root.","status":"published","published":"2026-10-31T14:33:55.211Z","modified":"2026-11-08T02:30:37.75241702Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-22"],"updated_at":"2026-11-07T03:08:10.640883Z"}]}}