{"cve":"CVE-2024-4367","nvd":{"published":"2024-05-14T18:15:12.467","modified":"2026-06-17T08:01:45.537","status":"Modified","description":"A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-754"],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1893645","https://lists.debian.org/debian-lts-announce/2024/05/msg00010.html","https://lists.debian.org/debian-lts-announce/2024/05/msg00012.html","https://www.mozilla.org/security/advisories/mfsa2024-21/","https://www.mozilla.org/security/advisories/mfsa2024-22/"],"products":["debian:debian_linux","mozilla:firefox","mozilla:thunderbird","open-xchange:open-xchange_appsuite_frontend"],"source":"nvd","synced_at":"2026-10-19T21:49:23.840078609+00:00"},"epss":{"cve":"CVE-2024-4367","score":0.7066,"percentile":0.99393,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wgrm-67xf-hhpq","url":"https://osv.dev/vulnerability/GHSA-wgrm-67xf-hhpq","summary":"PDF.js vulnerable to arbitrary JavaScript execution upon opening a malicious PDF","modified":"2026-09-10T03:50:14.381456323Z","packages":[{"ecosystem":"npm","name":"pdfjs-dist","purl":"pkg:npm/pdfjs-dist","ranges":["<4.2.67"],"fixed":["4.2.67"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}