{"cve":"CVE-2022-31166","nvd":{"published":"2022-09-07T14:15:08.840","modified":"2026-06-17T04:44:56.757","status":"Modified","description":"XWiki Platform Old Core is a core package for XWiki Platform, a generic wiki platform. Starting in versions 11.3.7, 11.0.3, and 12.0RC1, it is possible to exploit a bug in XWikiRights resolution of groups to obtain privilege escalation. More specifically, editing a right with the object editor leads to adding a supplementary empty value to groups which is then resolved as a reference to XWiki.WebHome page. Adding an XWikiGroup xobject to that page then transforms it to a group, any user put in that group would then obtain the privileges related to the edited right. Note that this security issue is normally mitigated by the fact that XWiki.WebHome (and XWiki space in general) should be protected by default for edit rights. The problem has been patched in XWiki 13.10.4 and 14.2RC1 to not consider anymore empty values in XWikiRights. It's possible to work around the problem by setting appropriate rights on XWiki.WebHome page to prevent users to edit it.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-269"],"references":["https://github.com/xwiki/xwiki-platform/pull/1800","https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-g4h6-qp44-wqvx","https://jira.xwiki.org/browse/XWIKI-15776","https://jira.xwiki.org/browse/XWIKI-18386","https://github.com/xwiki/xwiki-platform/pull/1800"],"products":["xwiki:xwiki"],"source":"nvd","synced_at":"2026-10-19T21:35:14.992143698+00:00"},"epss":{"cve":"CVE-2022-31166","score":0.01451,"percentile":0.73391,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-g4h6-qp44-wqvx","url":"https://osv.dev/vulnerability/GHSA-g4h6-qp44-wqvx","summary":"XWiki.WebHome vulnerable to Improper Privilege Management in XWiki resolving groups","modified":"2023-11-08T04:09:28.402727Z","packages":[{"ecosystem":"Maven","name":"org.xwiki.platform:xwiki-platform-oldcore","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-oldcore","ranges":[">=11.3.7 <13.10.4"],"fixed":["13.10.4"]},{"ecosystem":"Maven","name":"org.xwiki.platform:xwiki-platform-oldcore","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-oldcore","ranges":[">=14.0-rc-1 <14.2-rc-1"],"fixed":["14.2-rc-1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}