{"answers":{"affected":"6 open source packages ship an affected version, including @xmldom/xmldom and xmldom.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-83613 exists.","fix":"Upgrade @xmldom/xmldom to a fixed version for your release line: 0.8.15 or 0.9.12.","what":"CVE-2026-83613 is a high-severity denial of service vulnerability in @xmldom xmldom, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-83613 and fix it if it is affected.\n\nWhat it is: CVE-2026-83613 is a high-severity denial of service vulnerability in @xmldom xmldom, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-83613 exists.\n\nAffected packages and fixed versions:\n- @xmldom/xmldom (npm): affected from 0.7.0; fixed in 0.8.15\n- @xmldom/xmldom (npm): affected from 0.7.0; fixed in 0.8.15\n- @xmldom/xmldom (npm): affected from 0.9.0; fixed in 0.9.12\n- @xmldom/xmldom (npm): affected from 0.9.0; fixed in 0.9.12\n- xmldom (npm): affected all versions up to 0.6.0; no fix listed\n- xmldom (npm): affected all versions up to 0.6.0; 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-2026-83613/ (Markdown: https://insights.sbomify.com/CVE-2026-83613/index.md)","id":"CVE-2026-83613","markdown":"https://insights.sbomify.com/CVE-2026-83613/index.md","name":"CVE-2026-83613","record":{"aliases":["AZL-99353","CLEANSTART-2026-OV26495","DEBIAN-CVE-2026-83613","ECHO-ea52-9ef9-83eb","GHSA-8344-3jmq-59r6","MINI-335q-pf9f-r9rj","MINI-3ppv-9h25-rvx6","MINI-6fg7-3mmc-938w","MINI-wx94-m3pw-3xch","ROOT-APP-NPM-CVE-2026-83613","UBUNTU-CVE-2026-83613"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript XML library","requires_auth":"none","summary":"Attackers can cause denial of service in Node.js applications using xmldom by submitting XML with many attributes, triggering quadratic time complexity.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-407","name":"Inefficient Algorithmic Complexity"}],"description":"xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom version 0.6.0 and earlier, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode, while NamedNodeMap.setNamedItem in lib/dom.js calls the linear getNamedItem or getNamedItemNS lookup for each insertion. A well-formed element with many distinct attributes therefore requires quadratic comparisons during DOMParser.parseFromString() and can stall a Node.js event loop before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.","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":"xmldom: Quadratic-time attribute deduplication","id":"CVE-2026-83613","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":6,"n_references":7,"next":{"headline":"xmldom: Quadratic-time parsing via the malformed-input recovery path — `parseElementStartPart` re-scan and `normalize()` adjacent-text merge","id":"CVE-2026-83614"},"packages":[{"ecosystem":"npm","fixed":["0.8.15"],"introduced":["0.7.0"],"last_affected":[],"package":"@xmldom/xmldom","purl":null,"source":"GHSA-8344-3jmq-59r6"},{"ecosystem":"npm","fixed":["0.8.15"],"introduced":["0.7.0"],"last_affected":[],"package":"@xmldom/xmldom","purl":"pkg:npm/%40xmldom/xmldom","source":"GHSA-8344-3jmq-59r6"},{"ecosystem":"npm","fixed":["0.9.12"],"introduced":["0.9.0"],"last_affected":[],"package":"@xmldom/xmldom","purl":null,"source":"GHSA-8344-3jmq-59r6"},{"ecosystem":"npm","fixed":["0.9.12"],"introduced":["0.9.0"],"last_affected":[],"package":"@xmldom/xmldom","purl":"pkg:npm/%40xmldom/xmldom","source":"GHSA-8344-3jmq-59r6"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["0.6.0"],"package":"xmldom","purl":null,"source":"GHSA-8344-3jmq-59r6"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["0.6.0"],"package":"xmldom","purl":"pkg:npm/xmldom","source":"GHSA-8344-3jmq-59r6"}],"prev":{"headline":"xmldom: HTML raw-text closing-tag case mismatch causes output amplification","id":"CVE-2026-83612"},"products":["xmldom"],"published":"2026-09-01","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-04","vendors":["@xmldom","xmldom"]},"summary":"Attackers can cause denial of service in Node.js applications using xmldom by submitting XML with many attributes, triggering quadratic time complexity.","url":"https://insights.sbomify.com/CVE-2026-83613/"}