{"cve":"CVE-2026-65903","nvd":{"published":"2026-07-23T14:18:05.903","modified":"2026-10-24T13:10:00.147","status":"Analyzed","description":"DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","score":5.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-697"],"references":["https://github.com/cure53/DOMPurify/security/advisories/GHSA-39q2-94rc-95cp","https://www.vulncheck.com/advisories/dompurify-before-add-tags-function-bypasses-forbid-tags"],"products":["cure53:dompurify"],"source":"nvd","synced_at":"2026-10-24T16:53:27.712498749+00:00"},"epss":{"cve":"CVE-2026-65903","score":0.00325,"percentile":0.25303,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-39q2-94rc-95cp","url":"https://osv.dev/vulnerability/GHSA-39q2-94rc-95cp","summary":"DOMPurify's ADD_TAGS function form bypasses FORBID_TAGS due to short-circuit evaluation","modified":"2026-09-10T03:50:42.379451428Z","packages":[{"ecosystem":"npm","name":"dompurify","purl":"pkg:npm/dompurify","ranges":["<3.4.0"],"fixed":["3.4.0"]}]}],"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."]}