{"id":"CVE-2024-56364","aliases":["GHSA-r87q-fj25-f8jf"],"url":"https://o3.security/vulnerability/CVE-2024-56364","summary":"Cross-site Scripting vulnerability in SimpleXLSXEx::readThemeColors, SimpleXLSXEx::getColorValue and SimpleXLSX::toHTMLEx","details":"### Impact\nWhen calling the extended toHTMLEx method, it is possible to execute arbitrary JavaScript code.\n\n### Patches\nThe supplied patch resolves this vulnerability for SimpleXLSX. Use 1.1.13\n\n### Workarounds\nDon't use data publication via toHTMLEx\n\n***\nThis vulnerability was discovered by Aleksey Solovev (Positive Technologies)\n","published":"2024-12-23T15:52:06.327Z","modified":"2026-08-12T03:51:16.679753586Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.00246,"percentile":0.16197,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"shuchkin/simplexlsx","fixedVersion":"1.1.13"}],"fix":{"url":"https://github.com/shuchkin/simplexlsx/commit/71a5e3d40d14e33161f8a40b3fd02de542218ef0","label":"shuchkin/simplexlsx@71a5e3d"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56364.json"},{"type":"ADVISORY","url":"https://github.com/shuchkin/simplexlsx/security/advisories/GHSA-r87q-fj25-f8jf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56364"},{"type":"FIX","url":"https://github.com/shuchkin/simplexlsx/commit/71a5e3d40d14e33161f8a40b3fd02de542218ef0"},{"type":"PACKAGE","url":"https://github.com/shuchkin/simplexlsx"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:16.679753586Z"}}