{"id":"CVE-2023-27480","aliases":["EUVD-2023-1020","GHSA-gx4f-976g-7g6v"],"status":"published","title":"Data leak through a XAR import XXE attack in xwiki-platform-xar-model","description":"XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with edit rights on a document can trigger an XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. Users unable to upgrade may apply the patch `e3527b98fd` manually.","severity":{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00746,"percentile":0.55258,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2023-03-07T18:13:39Z","modified":"2026-10-28T10:38:35Z","fixes":[{"ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-xar-model","fixed_in":["13.10.11","14.4.7","14.10-rc-1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-xar-model","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1-milestone-3"},{"fixed":"13.10.11"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-xar-model","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0"},{"fixed":"14.4.7"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-xar-model","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.5"},{"fixed":"14.10-rc-1"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-xar-model","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1-milestone-3"},{"fixed":"13.10.11"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-xar-model","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0"},{"fixed":"14.4.7"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.xwiki.platform:xwiki-platform-xar-model","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.5"},{"fixed":"14.10-rc-1"}]}]}],"products":[{"vendor":"xwiki","product":"xwiki"},{"vendor":"xwiki","product":"xwiki-platform"}],"references":[{"url":"https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-gx4f-976g-7g6v","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch","Vendor Advisory","advisory","web"]},{"url":"https://github.com/xwiki/xwiki-platform/commit/e3527b98fdd8dc8179c24dc55e662b2c55199434","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://jira.xwiki.org/browse/XWIKI-20320","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27480","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-gx4f-976g-7g6v"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/27xxx/CVE-2023-27480.json","tags":["advisory"]},{"url":"https://github.com/xwiki/xwiki-platform","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-27480","title":"Data leak through a XAR import XXE attack in xwiki-platform-xar-model","description":"XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with edit rights on a document can trigger an XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. Users unable to upgrade may apply the patch `e3527b98fd` manually.","status":"published","published":"2023-03-07T18:13:39.799Z","modified":"2025-02-25T15:00:30.911Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:35:26.261013Z"}],"euvd":[{"id":"EUVD-2023-1020","description":"XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with edit rights on a document can trigger an XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. Users unable to upgrade may apply the patch `e3527b98fd` manually.","status":"published","published":"2023-03-07T18:13:39Z","modified":"2025-02-25T15:00:30Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T20:53:24.646946Z"}],"ghsa":[{"id":"GHSA-gx4f-976g-7g6v","title":"XWiki Platform vulnerable to data leak via Improper Restriction of XML External Entity Reference","description":"### Impact\nAny user with edit rights on a document can trigger a XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host.\n\nExample to reproduce:\n* Create a forget XAR file and inside it, have the following `package.xml` content:\n  ```xml\n  \u003c?xml version=\"1.0\" encoding=\"UTF-8\"?\u003e\n  \u003c!DOCTYPE foo [ \u003c!ENTITY xxe SYSTEM \"file:///etc/passwd\"\u003e ]\u003e\n\n  \u003cpackage\u003e\n  \u003cinfos\u003e\n  \u003cname\u003e\u0026xxe;\u003c/name\u003e\n  \u003cdescription\u003e \u0026xxe; Helper pages for creating and listing Class/Template/Sheets\u003c/description\u003e\n  \u003clicence\u003e\u003c/licence\u003e\n  \u003cauthor\u003eXWiki.Admin\u003c/author\u003e\n  ...\n  ```\n* Upload it onto a wiki page (e.g. `XXE`) as an attachment (e.g. `test.xar`).\n* Call the page using `http://localhost:8080/xwiki/bin/view/Main/XXE?sheet=XWiki.AdminImportSheet\u0026file=test.xar`\n\nYou'll then notice that the displayed UI contains the content of the `/etc/passwd` file.\n\n### Patches\nThe vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1.\n\n### Workarounds\nYou'd need to get XWiki Platform sources and apply the changes from https://github.com/xwiki/xwiki-platform/commit/e3527b98fdd8dc8179c24dc55e662b2c55199434 to the `XarPackage` java class and then copy the modified version to your `WEB-INF/classes` directory (or rebuild the `xwiki-platform-xar-model` maven module and replace the one found in `WEB-INF/lib/`).\n\n### References\n* https://github.com/xwiki/xwiki-platform/commit/e3527b98fdd8dc8179c24dc55e662b2c55199434\n* https://jira.xwiki.org/browse/XWIKI-20320\n\n### For more information\nIf you have any questions or comments about this advisory:\n*    Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)\n*    Email us at [Security Mailing List](mailto:security@xwiki.org)\n","status":"published","published":"2023-03-08T17:19:30Z","modified":"2023-03-08T17:19:31Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:36:47.279442Z"}],"nvd":[{"id":"CVE-2023-27480","description":"XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with edit rights on a document can trigger an XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. Users unable to upgrade may apply the patch `e3527b98fd` manually.","status":"published","published":"2023-03-07T19:15:12.663Z","modified":"2026-06-17T05:45:17.893Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:07:48.342507Z"}],"osv":[{"id":"CVE-2023-27480","title":"Data leak through a XAR import XXE attack in xwiki-platform-xar-model","description":"XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with edit rights on a document can trigger an XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. Users unable to upgrade may apply the patch `e3527b98fd` manually.","status":"published","published":"2023-03-07T18:13:39.799Z","modified":"2026-10-28T10:38:35.189027164Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T15:44:31.135751Z"},{"id":"GHSA-gx4f-976g-7g6v","title":"XWiki Platform vulnerable to data leak via Improper Restriction of XML External Entity Reference","description":"### Impact\nAny user with edit rights on a document can trigger a XAR import on a forged XAR file, leading to the ability to display the content of any file on the XWiki server host.\n\nExample to reproduce:\n* Create a forget XAR file and inside it, have the following `package.xml` content:\n  ```xml\n  \u003c?xml version=\"1.0\" encoding=\"UTF-8\"?\u003e\n  \u003c!DOCTYPE foo [ \u003c!ENTITY xxe SYSTEM \"file:///etc/passwd\"\u003e ]\u003e\n\n  \u003cpackage\u003e\n  \u003cinfos\u003e\n  \u003cname\u003e\u0026xxe;\u003c/name\u003e\n  \u003cdescription\u003e \u0026xxe; Helper pages for creating and listing Class/Template/Sheets\u003c/description\u003e\n  \u003clicence\u003e\u003c/licence\u003e\n  \u003cauthor\u003eXWiki.Admin\u003c/author\u003e\n  ...\n  ```\n* Upload it onto a wiki page (e.g. `XXE`) as an attachment (e.g. `test.xar`).\n* Call the page using `http://localhost:8080/xwiki/bin/view/Main/XXE?sheet=XWiki.AdminImportSheet\u0026file=test.xar`\n\nYou'll then notice that the displayed UI contains the content of the `/etc/passwd` file.\n\n### Patches\nThe vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1.\n\n### Workarounds\nYou'd need to get XWiki Platform sources and apply the changes from https://github.com/xwiki/xwiki-platform/commit/e3527b98fdd8dc8179c24dc55e662b2c55199434 to the `XarPackage` java class and then copy the modified version to your `WEB-INF/classes` directory (or rebuild the `xwiki-platform-xar-model` maven module and replace the one found in `WEB-INF/lib/`).\n\n### References\n* https://github.com/xwiki/xwiki-platform/commit/e3527b98fdd8dc8179c24dc55e662b2c55199434\n* https://jira.xwiki.org/browse/XWIKI-20320\n\n### For more information\nIf you have any questions or comments about this advisory:\n*    Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)\n*    Email us at [Security Mailing List](mailto:security@xwiki.org)\n","status":"published","published":"2023-03-08T17:19:30Z","modified":"2023-11-08T04:12:04.66721Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T15:46:48.191583Z"}]}}