{"id":"CVE-2021-43841","aliases":["GHSA-9jq9-c2cv-pcrj"],"url":"https://o3.security/vulnerability/CVE-2021-43841","summary":"Cross-site Scripting by SVG upload in xwiki-platform","details":"### Impact\nWhen using default XWiki configuration, it's possible for an attacker to upload an SVG containing a script executed when executing the download action on the file. \n\n### Patches\nThis problem has been patched so that the default configuration doesn't allow to display the SVG files in the browser.\n\n### Workarounds\nThis issue can be fixed without the patch by setting properly the configuration to download or display files, see: https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Attachments#HAttachmentdisplayordownload\n\n### References\nhttps://jira.xwiki.org/browse/XWIKI-18368\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira](http://jira.xwiki.org)\n* Email us at [security ML](mailto:security@xwiki.org)\n","published":"2022-02-04T23:15:11.957Z","modified":"2026-08-07T17:03:08.420170Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"org.xwiki.platform:xwiki-platform-oldcore","fixedVersion":"12.10.6"},{"ecosystem":"Maven","name":"org.xwiki.platform:xwiki-platform-oldcore","fixedVersion":"13.3RC1"},{"ecosystem":"Maven","name":"org.xwiki.platform:xwiki-platform-tool-configuration-resources","fixedVersion":"13.3RC1"},{"ecosystem":"Maven","name":"org.xwiki.platform:xwiki-platform-tool-configuration-resources","fixedVersion":"12.10.6"}],"fix":{"url":"https://github.com/xwiki/xwiki-platform/commit/5853d492b3a274db0d94d560e2a5ea988a271c62","label":"xwiki/xwiki-platform@5853d49"},"references":[{"type":"ADVISORY","url":"https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-9jq9-c2cv-pcrj"},{"type":"ADVISORY","url":"https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Attachments#HAttachmentdisplayordownload"},{"type":"FIX","url":"https://github.com/xwiki/xwiki-platform/commit/5853d492b3a274db0d94d560e2a5ea988a271c62"},{"type":"FIX","url":"https://jira.xwiki.org/browse/XWIKI-18368"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43841"},{"type":"WEB","url":"https://github.com/xwiki/xwiki-platform"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T17:03:08.420170Z"}}