{"answers":{"affected":"2 open source packages ship an affected version, including dompurify. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-65901 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-65901 is a medium-severity cross-site scripting vulnerability in cure53 DOMPurify, published on 23 Jul 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-2026-65901 and fix it if it is affected.\n\nWhat it is: CVE-2026-65901 is a medium-severity cross-site scripting vulnerability in cure53 DOMPurify, published on 23 Jul 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-65901 exists.\n\nAffected packages and fixed versions:\n- dompurify (npm): affected all versions up to 3.4.6; no fix listed\n- dompurify (npm): affected all versions up to 3.4.6; no fix listed\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-2026-65901/ (Markdown: https://insights.sbomify.com/CVE-2026-65901/index.md)","id":"CVE-2026-65901","markdown":"https://insights.sbomify.com/CVE-2026-65901/index.md","name":"CVE-2026-65901","record":{"aliases":["CLSA-2026-1784596351","CLSA-2026-1784682973","CLSA-2026-1784683092","CLSA-2026-1784769526","CLSA-2026-1784856036","DEBIAN-CVE-2026-65901","ECHO-8289-7eff-5e3a","GHSA-x4vx-rjvf-j5p4","MINI-38f7-vhgq-4qm2","MINI-5498-x2xm-v8fx","MINI-5f98-q4xj-frrj","MINI-5fvv-2wx3-qq99","MINI-65cg-mvr3-6qmx","MINI-6p95-g5cf-fc9p","MINI-88m9-jx87-86x2","MINI-986f-cr44-h249","MINI-cmxr-pj42-23w4","MINI-cq89-x694-627j","MINI-g34m-4gcj-9wvm","MINI-g5g4-ch3p-rq28","MINI-r66x-86x7-2j37","MINI-rwvx-f7j8-whx2","MINI-v766-r983-w2p9","MINI-vw53-4xp5-8g5g","MINI-xrw3-9f85-j9fx","UBUNTU-CVE-2026-65901"],"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 scripts by exploiting DOMPurify's IN_PLACE mode to bypass sanitization via manipulated node names.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"dompurify","vendor":"cure53"}],"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 through 3.4.6 contains a cross-site scripting vulnerability in IN_PLACE mode that trusts attacker-controlled nodeName on live non-form nodes. Attackers can supply hostile live DOM objects with real script children whose observable nodeName is clobbered to appear as allowed elements, causing scripts to execute when the sanitized tree is inserted into a live document.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"DOMPurify 3.4.6 Cross-Site Scripting via IN_PLACE nodeName","id":"CVE-2026-65901","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 3.4.7 Hook Mutation Pollution via allowedTags","id":"CVE-2026-65902"},"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["3.4.6"],"package":"dompurify","purl":null,"source":"GHSA-x4vx-rjvf-j5p4"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["3.4.6"],"package":"dompurify","purl":"pkg:npm/dompurify","source":"GHSA-x4vx-rjvf-j5p4"}],"prev":{"headline":"DOMPurify before 3.4.8 Template Expression Injection via RETURN_DOM","id":"CVE-2026-65900"},"products":["DOMPurify"],"published":"2026-07-23","related":[{"cvss_score":10,"headline":"DOMPurify nesting-based mXSS","id":"CVE-2024-47875","kev_date_added":null,"published":"2024-10-11"},{"cvss_score":9.1,"headline":"DOMPurify vulnerable to tampering by prototype polution","id":"CVE-2024-48910","kev_date_added":null,"published":"2024-10-31"},{"cvss_score":8.2,"headline":"DOMPurify XSS via `selectedcontent` re-clone","id":"CVE-2026-47423","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":7.3,"headline":"Tampering by prototype polution in DOMPurify","id":"CVE-2024-45801","kev_date_added":null,"published":"2024-09-16"},{"cvss_score":6.3,"headline":"DOMPurify IN_PLACE Sanitization Bypass via Attached Shadow Root Inside \u003ctemplate\u003e.content","id":"CVE-2026-49978","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":6.1,"headline":"DOMPurify: Cross-realm IN_PLACE sanitization leaves executable markup intact via realm-bound `instanceof` checks","id":"CVE-2026-49458","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":6.1,"headline":"DOMPurify: IN_PLACE mode preserves attributes of a clobbered root element, allowing XSS via attacker-controlled root DOM","id":"CVE-2026-49459","kev_date_added":null,"published":"2026-07-14"}],"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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-23","vendors":["cure53"]},"summary":"Attackers can execute arbitrary scripts by exploiting DOMPurify's IN_PLACE mode to bypass sanitization via manipulated node names.","url":"https://insights.sbomify.com/CVE-2026-65901/"}