{"id":"CVE-2021-32796","aliases":["CLSA-2026-1772583195","CLSA-2026-1778114662","DEBIAN-CVE-2021-32796","EUVD-2021-1574","GHSA-5fg8-2547-mr8q","UBUNTU-CVE-2021-32796"],"status":"published","title":"Misinterpretation of malicious XML input in xmldom","description":"xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01358,"percentile":0.72046,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-116","CWE-91"],"published":"2021-07-27T21:45:13Z","modified":"2026-11-05T13:28:26Z","fixes":[{"ecosystem":"npm","package":"@xmldom/xmldom","fixed_in":["0.7.0"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"node-xmldom","fixed_in":["0.7.3-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"node-xmldom","fixed_in":["0.7.3-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"node-xmldom","fixed_in":["0.7.3-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.6.0"}]}]},{"source":"ghsa","ecosystem":"npm","package":"@xmldom/xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.1.31-tuxcare.0"},{"fixed":"0.1.31-tuxcare.1"}]}],"versions":["0.1.31"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:npm","package":"xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.6.0-tuxcare.0"},{"fixed":"0.6.0-tuxcare.2"}]}],"versions":["0.6.0","0.6.0-tuxcare.1"],"bundled":3},{"source":"osv","ecosystem":"Debian:12","package":"node-xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.3-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"node-xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.3-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"node-xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.3-1"}]}]},{"source":"osv","ecosystem":"npm","package":"xmldom","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.6.0"}]}]},{"source":"osv","ecosystem":"npm","package":"@xmldom/xmldom","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.7.0"}]}]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"node-xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.27+ds-1","0.1.27+ds-1+deb10u2build0.20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"node-xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.6-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"node-xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.6-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"node-xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.8-2","0.9.10-2","0.9.11-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"node-xmldom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.6-1","0.9.8-1","0.9.8-2"]}],"products":[{"vendor":"xmldom","product":"xmldom"},{"vendor":"xmldom_project","product":"xmldom"}],"references":[{"url":"https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/","tags":["x_refsource_MISC","x_transferred","Not Applicable","Third Party Advisory","advisory","report"]},{"url":"https://github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8q","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8b","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32796","tags":["advisory"]},{"url":"https://www.npmjs.com/package/@xmldom/xmldom","tags":["web"]},{"url":"https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities","tags":["web"]},{"url":"https://mattermost.com/blog/securing-xml-implementations-across-the-web","tags":["web"]},{"url":"https://github.com/advisories/GHSA-5fg8-2547-mr8q"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-32796","tags":["advisory"]},{"url":"https://github.com/xmldom/xmldom","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-32796","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-32796","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-32796","title":"Misinterpretation of malicious XML input in xmldom","description":"xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.","status":"published","published":"2021-07-27T21:45:13Z","modified":"2024-08-03T23:33:55.989Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-1574","description":"xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.","status":"published","published":"2021-07-27T21:45:13Z","modified":"2024-08-03T23:33:55Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:24:35.855495Z"}],"ghsa":[{"id":"GHSA-5fg8-2547-mr8q","title":"Misinterpretation of malicious XML input","description":"### Impact\nxmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications.\n\n### Patches\nUpdate to one of the fixed versions of `@xmldom/xmldom` (`\u003e=0.7.0`)\n\nSee issue #271 for the status of publishing `xmldom` to npm or join #270 for Q\u0026A/discussion until it's resolved.\n\n### Workarounds\n\nDownstream applications can validate the input and reject the maliciously crafted documents.\n\n### References\n\nSimilar to this one reported on the Go standard library:\n\n- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/\n- https://mattermost.com/blog/securing-xml-implementations-across-the-web/\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [`xmldom/xmldom`](https://github.com/xmldom/xmldom)\n* Email us: send an email to **all** addresses that are shown by `npm owner ls @xmldom/xmldom`\n","status":"published","published":"2021-08-03T16:57:05Z","modified":"2024-02-22T19:03:29Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T14:37:38.935144Z"}],"nvd":[{"id":"CVE-2021-32796","description":"xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.","status":"published","published":"2021-07-27T22:15:07.69Z","modified":"2026-06-17T03:53:38.86Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-116","CWE-91"],"updated_at":"2026-11-02T14:06:56.185362Z"}],"osv":[{"id":"CVE-2021-32796","description":"xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.","status":"published","published":"2021-07-27T22:15:07.69Z","modified":"2026-11-10T10:45:26.460482122Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-10T10:57:25.458985Z"},{"id":"DEBIAN-CVE-2021-32796","description":"xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.","status":"published","published":"2021-07-27T22:15:07.69Z","modified":"2026-10-23T18:03:14.640639615Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"GHSA-5fg8-2547-mr8q","title":"Misinterpretation of malicious XML input","description":"### Impact\nxmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications.\n\n### Patches\nUpdate to one of the fixed versions of `@xmldom/xmldom` (`\u003e=0.7.0`)\n\nSee issue #271 for the status of publishing `xmldom` to npm or join #270 for Q\u0026A/discussion until it's resolved.\n\n### Workarounds\n\nDownstream applications can validate the input and reject the maliciously crafted documents.\n\n### References\n\nSimilar to this one reported on the Go standard library:\n\n- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/\n- https://mattermost.com/blog/securing-xml-implementations-across-the-web/\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [`xmldom/xmldom`](https://github.com/xmldom/xmldom)\n* Email us: send an email to **all** addresses that are shown by `npm owner ls @xmldom/xmldom`\n","status":"published","published":"2021-08-03T16:57:05Z","modified":"2026-09-10T03:49:15.589618779Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T15:46:38.213481Z"},{"id":"UBUNTU-CVE-2021-32796","description":"xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.","status":"published","published":"2021-07-27T22:15:00Z","modified":"2026-10-17T12:55:46.82490666Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:27.332852Z"},{"id":"CLSA-2026-1772583195","title":"TuxCare security update for xmldom (2 CVEs)","description":"TuxCare rebuilt xmldom to address 2 CVEs. Fixed in 0.1.31-tuxcare.1.","status":"published","published":"2026-08-04T14:52:10Z","modified":"2026-11-05T13:28:23.268077388Z","updated_at":"2026-11-05T16:37:45.64821Z"},{"id":"CLSA-2026-1778114662","title":"TuxCare security update for xmldom (3 CVEs)","description":"TuxCare rebuilt xmldom to address 3 CVEs. Fixed in 0.6.0-tuxcare.2.","status":"published","published":"2026-08-04T14:52:30Z","modified":"2026-11-05T13:28:26.23619373Z","updated_at":"2026-11-05T16:37:45.64821Z"}]}}