{"answers":{"affected":"2 open source packages ship an affected version, including dompurify.","exploited":"There is no known exploitation of CVE-2026-109344 in the wild and no public exploit code.","fix":"Upgrade dompurify to 3.4.16 or later.","what":"CVE-2026-109344 is a medium-severity cross-site scripting vulnerability in cure53 DOMPurify, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-109344 and fix it if it is affected.\n\nWhat it is: CVE-2026-109344 is a medium-severity cross-site scripting vulnerability in cure53 DOMPurify, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-109344 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- dompurify (npm): affected from 3.4.13; fixed in 3.4.16\n- dompurify (npm): affected from 3.4.13; fixed in 3.4.16\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-2026-109344/ (Markdown: https://insights.sbomify.com/CVE-2026-109344/index.md)","id":"CVE-2026-109344","markdown":"https://insights.sbomify.com/CVE-2026-109344/index.md","name":"CVE-2026-109344","record":{"aliases":["CLSA-2026-1790884902","DEBIAN-CVE-2026-109344","ECHO-e468-7586-9019","GHSA-59fh-8xxf-p69h","GHSA-p98j-92pf-mc4p","MINI-f2qg-xq49-77f8","MINI-qwjx-45c3-g379","MINI-rj9x-5r23-8m58","MINI-rqcm-2w25-j8cm","UBUNTU-CVE-2026-109344"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"JavaScript sanitization library","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript in the victim's origin by exploiting DOMPurify's IN_PLACE mode when custom sanitization hooks are used.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","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 3.4.13 before 3.4.16 contains a cross-site scripting vulnerability because IN_PLACE mode fails to neutralize subtrees detached by afterSanitizeElements or afterSanitizeAttributes hooks. Attackers can supply markup with on* handlers inside a wrapper removed by such hooks, leaving handlers armed on the live DOM to execute script in the victim origin.","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 3.4.13 before 3.4.16 DOM XSS via IN_PLACE afterSanitize Hooks","id":"CVE-2026-109344","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root","id":"CVE-2026-109345"},"packages":[{"ecosystem":"npm","fixed":["3.4.16"],"introduced":["3.4.13"],"last_affected":[],"package":"dompurify","purl":null,"source":"GHSA-p98j-92pf-mc4p"},{"ecosystem":"npm","fixed":["3.4.16"],"introduced":["3.4.13"],"last_affected":[],"package":"dompurify","purl":"pkg:npm/dompurify","source":"GHSA-p98j-92pf-mc4p"}],"prev":{"headline":"SurrealDB before 3.3.0 Cross-Tenant Access via USE Statement","id":"CVE-2026-109343"},"products":["DOMPurify"],"published":"2026-10-12","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-13","vendors":["cure53"]},"summary":"Attackers can execute arbitrary JavaScript in the victim's origin by exploiting DOMPurify's IN_PLACE mode when custom sanitization hooks are used.","url":"https://insights.sbomify.com/CVE-2026-109344/"}