{"id":"GHSA-x2qm-r4wx-8gpg","summary":"org.xwiki.platform:xwiki-platform-flamingo-theme-ui Eval Injection vulnerability","details":"### Impact\nIt's possible to inject arbitrary wiki syntax including Groovy, Python and Velocity script macros via the `newThemeName` request parameter (URL parameter), in combination with additional parameters `form_token=1&action=create`.\n\nFor instance: [http://127.0.0.1:8080/xwiki/bin/view/FlamingoThemesCode/WebHomeSheet?newThemeName=foo%22%2F%7D%7D%7B%7Basync%20async%3D%22true%22%20cached%3D%22false%22%20context%3D%22doc.reference%22%7D%7D%7B%7Bgroovy%7D%7Dprintln(%22hello%20from%20groovy!%22)%7B%7B%2Fgroovy%7D%7D%7B%7B%2Fasync%7D%7D&form_token=1&action=create](http://127.0.0.1:8080/xwiki/bin/view/FlamingoThemesCode/WebHomeSheet?**newThemeName**=foo%22%2F%7D%7D%7B%7Basync%20async%3D%22true%22%20cached%3D%22false%22%20context%3D%22doc.reference%22%7D%7D%7B%7Bgroovy%7D%7Dprintln(%22hello%20from%20groovy!%22)%7B%7B%2Fgroovy%7D%7D%7B%7B%2Fasync%7D%7D&form_token=1&action=create) will execute the following groovy code: `println(\"hello from groovy!\")` on the server.\n\n### Patches\nThis has been patched in the supported versions 13.10.10, 14.9-rc-1, and 14.4.6.\n\n### Workarounds\nIt is possible to edit `FlamingoThemesCode.WebHomeSheet` and manually perform the changes from [the patch fixing the issue](https://github.com/xwiki/xwiki-platform/commit/ea2e615f50a918802fd60b09ec87aa04bc6ea8e2#diff-e2153fa59f9d92ef67b0afbf27984bd17170921a3b558fac227160003d0dfd2aR283-R284).\n\n### References\n- https://github.com/xwiki/xwiki-platform/commit/ea2e615f50a918802fd60b09ec87aa04bc6ea8e2#diff-e2153fa59f9d92ef67b0afbf27984bd17170921a3b558fac227160003d0dfd2aR283-R284\n- https://jira.xwiki.org/browse/XWIKI-19757\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","aliases":["CVE-2023-26477"],"modified":"2026-09-10T03:49:53.300130596Z","published":"2023-03-03T22:51:02Z","database_specific":{"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2023-03-03T22:51:02Z","nvd_published_at":"2023-03-02T18:15:00Z","cwe_ids":["CWE-94","CWE-95"]},"references":[{"type":"WEB","url":"https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-x2qm-r4wx-8gpg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-26477"},{"type":"WEB","url":"https://github.com/xwiki/xwiki-platform/commit/ea2e615f50a918802fd60b09ec87aa04bc6ea8e2#diff-e2153fa59f9d92ef67b0afbf27984bd17170921a3b558fac227160003d0dfd2aR283-R284"},{"type":"PACKAGE","url":"https://github.com/xwiki/xwiki-platform"},{"type":"WEB","url":"https://jira.xwiki.org/browse/XWIKI-19757"}],"affected":[{"package":{"name":"org.xwiki.platform:xwiki-platform-flamingo-theme-ui","ecosystem":"Maven","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-flamingo-theme-ui"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.4"},{"fixed":"13.10.10"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-x2qm-r4wx-8gpg/GHSA-x2qm-r4wx-8gpg.json"}},{"package":{"name":"org.xwiki.platform:xwiki-platform-flamingo-theme-ui","ecosystem":"Maven","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-flamingo-theme-ui"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0"},{"fixed":"14.4.6"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-x2qm-r4wx-8gpg/GHSA-x2qm-r4wx-8gpg.json"}},{"package":{"name":"org.xwiki.platform:xwiki-platform-flamingo-theme-ui","ecosystem":"Maven","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-flamingo-theme-ui"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.5"},{"fixed":"14.9-rc-1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-x2qm-r4wx-8gpg/GHSA-x2qm-r4wx-8gpg.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"}]}