{"answers":{"affected":"2 open source packages ship an affected version, including dompurify.","exploited":"There is no known exploitation of CVE-2026-116804 in the wild and no public exploit code.","fix":"Upgrade dompurify to 3.4.17 or later.","what":"CVE-2026-116804 is a medium-severity vulnerability in cure53 DOMPurify, published on 26 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-116804 and fix it if it is affected.\n\nWhat it is: CVE-2026-116804 is a medium-severity vulnerability in cure53 DOMPurify, published on 26 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-116804 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- dompurify (npm): affected from 3.4.4; fixed in 3.4.17\n- dompurify (npm): affected from 3.4.4; fixed in 3.4.17\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-116804/ (Markdown: https://insights.sbomify.com/CVE-2026-116804/index.md)","id":"CVE-2026-116804","markdown":"https://insights.sbomify.com/CVE-2026-116804/index.md","name":"CVE-2026-116804","record":{"aliases":["CLSA-2026-1793120002","DEBIAN-CVE-2026-116804","ECHO-1dd3-7228-30d3","GHSA-6vxf-252m-8g79","GHSA-cg2g-xh64-v4q7","ROOT-APP-NPM-GHSA-cg2g-xh64-v4q7","UBUNTU-CVE-2026-116804"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"DOMPurify from 3.4.4 before 3.4.17 contains a SAFE_FOR_TEMPLATES bypass that lets attackers preserve template expressions in attached shadow roots when using RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE modes. Attackers can split expressions across text nodes separated by disallowed elements, which merge after removal and are evaluated by downstream template engines for cross-site scripting.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"DOMPurify from 3.4.4 before 3.4.17 SAFE_FOR_TEMPLATES Bypass via Shadow Root Content","id":"CVE-2026-116804","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"OpenPanel before 3.0.0 Information Disclosure of Ingestion Secret Hashes via client.list","id":"CVE-2026-116805"},"packages":[{"ecosystem":"npm","fixed":["3.4.17"],"introduced":["3.4.4"],"last_affected":[],"package":"dompurify","purl":null,"source":"GHSA-cg2g-xh64-v4q7"},{"ecosystem":"npm","fixed":["3.4.17"],"introduced":["3.4.4"],"last_affected":[],"package":"dompurify","purl":"pkg:npm/dompurify","source":"GHSA-cg2g-xh64-v4q7"}],"prev":{"headline":"DOMPurify before 3.4.17 DOM XSS via IN_PLACE Hook-Detached Subtrees","id":"CVE-2026-116803"},"products":["DOMPurify"],"published":"2026-10-26","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-26","vendors":["cure53"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-116804/"}