{"id":"CVE-2026-44990","aliases":["GHSA-rpr9-rxv7-x643"],"url":"https://o3.security/vulnerability/CVE-2026-44990","summary":"Apostrophe has default XSS via `xmp` raw-text passthrough in `sanitize-html`","details":"ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. Under the default configuration, versions of `sanitize-html` prior to 2.17.4 can turn attacker-controlled content inside a disallowed `xmp` element into live HTML or JavaScript. This is a sanitizer bypass in the default `disallowedTagsMode: 'discard'` path and can lead to stored XSS in applications that render sanitized output back to users. Version 2.17.4 patches the issue.","published":"2026-06-12T20:39:47.065Z","modified":"2026-08-12T03:51:44.542232517Z","cvss":{"score":9.3,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N"},"epss":{"score":0.00514,"percentile":0.41048,"asOf":"2026-08-11"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"sanitize-html","fixedVersion":"2.17.4"}],"fix":null,"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44990.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:36882"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:36883"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:40262"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:41031"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:41055"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:41064"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:41066"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:42146"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:42796"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:43052"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:46598"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:46685"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:46885"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:46903"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:47735"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:47737"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:48124"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:51196"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:51197"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:51349"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-44990"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44990.json"},{"type":"ADVISORY","url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-rpr9-rxv7-x643"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44990"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2488565"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:44.542232517Z"}}