{"id":"CVE-2026-41650","summary":"fast-xml-parser XMLBuilder: XML Comment and CDATA Injection via Unescaped Delimiters","details":"fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Prior to version 5.7.0, XMLBuilder does not escape the \"--\u003e\" sequence in comment content or the \"]]\u003e\" sequence in CDATA sections when building XML from JavaScript objects. This allows XML injection when user-controlled data flows into comments or CDATA elements, leading to XSS, SOAP injection, or data manipulation. This issue has been patched in version 5.7.0.","aliases":["GHSA-gh4j-gqv2-49f6"],"modified":"2026-05-18T06:00:09.734637397Z","published":"2026-05-07T13:36:55.871Z","related":["CGA-4v67-j4wv-j2jf"],"database_specific":{"cwe_ids":["CWE-91"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41650.json"},"references":[{"type":"WEB","url":"https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.6.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41650.json"},{"type":"ADVISORY","url":"https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-gh4j-gqv2-49f6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41650"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/naturalintelligence/fast-xml-parser","events":[{"introduced":"0"},{"fixed":"f529642d760ef53bb9115ad4798af5dc77ac22c4"}]}],"versions":["v5.6.0","v5.5.12","v5.5.11","v5.5.10","v5.5.9","v5.5.8","v5.5.7","v5.5.6","v5.5.5","v5.5.4","v5.5.3","v5.5.2","v5.5.1","v5.5.0","v5.4.2","v5.4.1","v4.5.2","v5.4.0","v5.3.9","v5.3.8","v5.3.7","v5.3.6","v5.3.5","v5.3.4","v5.3.3","v5.3.2","v5.3.1","v5.3.0","v5.2.5","v5.2.3","v5.2.2","v5.2.1","v5.2.0","v5.1.0","v5.0.9","v5.0.7","v5.0.6","v5.0.4","v5.0.2","v5.0.0","v4.5.1","v4.5.0","v4.4.1","v4.4.0","v4.3.6","v4.3.5","v4.3.4","v4.3.3","v4.3.2","v4.3.1","v4.3.0","v4.2.7","v4.2.6","v4.2.5","v4.2.4","v4.2.3","v4.2.0","v4.1.4","v4.1.3","v4.1.2","v4.1.1","v4.1.0","v4.0.15","v4.0.14","v4.0.13","v4.0.12","v4.0.11","v4.0.10","v4.0.9","v4.0.8","v4.0.7","v4.0.6","v4.0.5","v4.0.4","v4.0.2","v4.0.1","v4.0.0","v4.0.0-beta.6","v4.0.0-beta.5","v4.0.0-beta.4","v4.0.0-beta.3","v4.0.0-beta.2","v4.0.0-beta.0","v3.21.1","v3.21.0","v3.20.3","v3.20.2","v3.20.1","v3.20.0","3.19.0","3.18.0","3.17.5","3.17.1","3.16.0","v3.15.0","3.14.0","3.13.0","3.12.16","3.12.5","3.10.0","3.4.0","3.2.0","3.0.0","2.9.4","2.9.3"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-41650.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}