{"id":"CVE-2021-45394","aliases":["GHSA-6m93-343m-3jrc"],"url":"https://o3.security/vulnerability/CVE-2021-45394","summary":"Cross-site Scripting in HTML2PDF","details":"An issue was discovered in Spipu HTML2PDF before 5.2.4. Attackers can trigger deserialization of arbitrary data via the injection of a malicious <link> tag in the converted HTML document.","published":"2022-01-18T12:15:08.243Z","modified":"2026-07-09T01:06:37.334060Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":{"score":0.01581,"percentile":0.73218,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"spipu/html2pdf","fixedVersion":"5.2.4"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/spipu/html2pdf/blob/master/CHANGELOG.md"},{"type":"PACKAGE","url":"https://github.com/spipu/html2pdf"},{"type":"EVIDENCE","url":"https://www.synacktiv.com/sites/default/files/2022-01/html2pdf_ssrf_deserialization.pdf"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T01:06:37.334060Z"}}