{"id":"CVE-2024-31981","aliases":["EUVD-2024-1314","GHSA-vxwr-wpjv-qjq7"],"status":"published","title":"XWiki Platform: Privilege escalation (PR) from user registration through PDFClass","description":"XWiki Platform is a generic wiki platform. Starting in version 3.0.1 and prior to versions 4.10.20, 15.5.4, and 15.10-rc-1, remote code execution is possible via PDF export templates. This vulnerability has been patched in XWiki 14.10.20, 15.5.4 and 15.10-rc-1. If PDF templates are not typically used on the instance, an administrator can create the document `XWiki.PDFClass` and block its edition, after making sure that it does not contain a `style` attribute. Otherwise, there are no known workarounds aside from upgrading.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01447,"percentile":0.73531,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-862"],"published":"2024-04-10T17:11:45Z","modified":"2026-10-28T10:43:46Z","fixes":[{"ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-oldcore","fixed_in":["14.10.20","15.5.4","15.10-rc-1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-oldcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.1"},{"fixed":"14.10.20"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-oldcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15.0-rc-1"},{"fixed":"15.5.4"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-oldcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15.6-rc-1"},{"fixed":"15.10-rc-1"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-oldcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.1"},{"fixed":"14.10.20"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-oldcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15.0-rc-1"},{"fixed":"15.5.4"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-oldcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15.6-rc-1"},{"fixed":"15.10-rc-1"}]}]}],"products":[{"vendor":"xwiki","product":"xwiki"},{"vendor":"xwiki","product":"xwiki-platform"}],"references":[{"url":"https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vxwr-wpjv-qjq7","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/xwiki/xwiki-platform/commit/480186f9d2fca880513da8bc5a609674d106cbd3","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/xwiki/xwiki-platform/commit/a4ad14d9c1605a5ab957237e505ebbb29f5b9d73","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/xwiki/xwiki-platform/commit/d28e21a670c69880b951e415dd2ddd69d273eae9","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://jira.xwiki.org/browse/XWIKI-21337","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-31981","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vxwr-wpjv-qjq7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/31xxx/CVE-2024-31981.json","tags":["advisory"]},{"url":"https://github.com/xwiki/xwiki-platform","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-31981","title":"XWiki Platform: Privilege escalation (PR) from user registration through PDFClass","description":"XWiki Platform is a generic wiki platform. Starting in version 3.0.1 and prior to versions 4.10.20, 15.5.4, and 15.10-rc-1, remote code execution is possible via PDF export templates. This vulnerability has been patched in XWiki 14.10.20, 15.5.4 and 15.10-rc-1. If PDF templates are not typically used on the instance, an administrator can create the document `XWiki.PDFClass` and block its edition, after making sure that it does not contain a `style` attribute. Otherwise, there are no known workarounds aside from upgrading.","status":"published","published":"2024-04-10T19:22:57.494Z","modified":"2024-08-13T13:37:34.85Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:34:14.308905Z"}],"euvd":[{"id":"EUVD-2024-1314","description":"XWiki Platform is a generic wiki platform. Starting in version 3.0.1 and prior to versions 4.10.20, 15.5.4, and 15.10-rc-1, remote code execution is possible via PDF export templates. This vulnerability has been patched in XWiki 14.10.20, 15.5.4 and 15.10-rc-1. If PDF templates are not typically used on the instance, an administrator can create the document `XWiki.PDFClass` and block its edition, after making sure that it does not contain a `style` attribute. Otherwise, there are no known workarounds aside from upgrading.","status":"published","published":"2024-04-10T19:22:57Z","modified":"2024-08-13T13:37:34Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:56:19.192984Z"}],"ghsa":[{"id":"GHSA-vxwr-wpjv-qjq7","title":"XWiki Platform: Privilege escalation (PR) from user registration through PDFClass","description":"### Impact\nRemote code execution is possible via PDF export templates.\nTo reproduce on an installation, register a new user account with username `PDFClass` if `XWiki.PDFClass` does not exist.\nOn `XWiki.PDFClass`, use the class editor to add a \"style\" property of type \"TextArea\" and content type \"Plain Text\".\nThen, add an object of class `PDFClass` and set the \"style\" attribute to `$services.logging.getLogger('PDFClass').error(\"I got programming: $services.security.authorization.hasAccess('programming')\")`.\nFinally, go to `\u003chost\u003e/xwiki/bin/export/Main/WebHome?format=pdf\u0026pdftemplate=XWiki.PDFClass`. If the logs contain \"ERROR PDFClass - I got programming: true\", the instance is vulnerable.\n\n### Patches\nThis vulnerability has been patched in XWiki 14.10.20, 15.5.4 and 15.10-rc-1.\n\n### Workarounds\nIf PDF templates are not typically used on the instance, an administrator can create the document `XWiki.PDFClass` and block its edition, after making sure that it does not contain a `style` attribute.\nOtherwise, the instance needs to be updated.\n\n### References\n- https://jira.xwiki.org/browse/XWIKI-21337\n- https://github.com/xwiki/xwiki-platform/commit/d28e21a670c69880b951e415dd2ddd69d273eae9\n","status":"published","published":"2024-04-10T17:11:45Z","modified":"2024-04-10T22:00:52Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:37:42.744468Z"}],"nvd":[{"id":"CVE-2024-31981","description":"XWiki Platform is a generic wiki platform. Starting in version 3.0.1 and prior to versions 4.10.20, 15.5.4, and 15.10-rc-1, remote code execution is possible via PDF export templates. This vulnerability has been patched in XWiki 14.10.20, 15.5.4 and 15.10-rc-1. If PDF templates are not typically used on the instance, an administrator can create the document `XWiki.PDFClass` and block its edition, after making sure that it does not contain a `style` attribute. Otherwise, there are no known workarounds aside from upgrading.","status":"published","published":"2024-04-10T20:15:08.28Z","modified":"2026-06-17T07:29:03.42Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:09:49.255123Z"}],"osv":[{"id":"CVE-2024-31981","title":"XWiki Platform: Privilege escalation (PR) from user registration through PDFClass","description":"XWiki Platform is a generic wiki platform. Starting in version 3.0.1 and prior to versions 4.10.20, 15.5.4, and 15.10-rc-1, remote code execution is possible via PDF export templates. This vulnerability has been patched in XWiki 14.10.20, 15.5.4 and 15.10-rc-1. If PDF templates are not typically used on the instance, an administrator can create the document `XWiki.PDFClass` and block its edition, after making sure that it does not contain a `style` attribute. Otherwise, there are no known workarounds aside from upgrading.","status":"published","published":"2024-04-10T19:22:57.494Z","modified":"2026-10-28T10:43:46.814449825Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:44:40.391953Z"},{"id":"GHSA-vxwr-wpjv-qjq7","title":"XWiki Platform: Privilege escalation (PR) from user registration through PDFClass","description":"### Impact\nRemote code execution is possible via PDF export templates.\nTo reproduce on an installation, register a new user account with username `PDFClass` if `XWiki.PDFClass` does not exist.\nOn `XWiki.PDFClass`, use the class editor to add a \"style\" property of type \"TextArea\" and content type \"Plain Text\".\nThen, add an object of class `PDFClass` and set the \"style\" attribute to `$services.logging.getLogger('PDFClass').error(\"I got programming: $services.security.authorization.hasAccess('programming')\")`.\nFinally, go to `\u003chost\u003e/xwiki/bin/export/Main/WebHome?format=pdf\u0026pdftemplate=XWiki.PDFClass`. If the logs contain \"ERROR PDFClass - I got programming: true\", the instance is vulnerable.\n\n### Patches\nThis vulnerability has been patched in XWiki 14.10.20, 15.5.4 and 15.10-rc-1.\n\n### Workarounds\nIf PDF templates are not typically used on the instance, an administrator can create the document `XWiki.PDFClass` and block its edition, after making sure that it does not contain a `style` attribute.\nOtherwise, the instance needs to be updated.\n\n### References\n- https://jira.xwiki.org/browse/XWIKI-21337\n- https://github.com/xwiki/xwiki-platform/commit/d28e21a670c69880b951e415dd2ddd69d273eae9\n","status":"published","published":"2024-04-10T17:11:45Z","modified":"2026-09-10T03:50:00.424591927Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:46:58.04805Z"}]}}