{"cve":{"cve_id":"CVE-2023-26477","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.74757,"epss_percentile":0.99437,"epss_as_of":"2026-06-23","description":"XWiki Platform is a generic wiki platform. Starting in versions 6.3-rc-1 and 6.2.4, it'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. This has been patched in the supported versions 13.10.10, 14.9-rc-1, and 14.4.6. As a workaround, it is possible to edit `FlamingoThemesCode.WebHomeSheet` and manually perform the changes from the patch fixing the issue.\n","published_at":"2023-03-02T17:52:40.359000Z","last_modified_at":null,"cvss_v3_score":10.0,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-95"],"nvd_references":["https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-x2qm-r4wx-8gpg","https://github.com/xwiki/xwiki-platform/commit/ea2e615f50a918802fd60b09ec87aa04bc6ea8e2#diff-e2153fa59f9d92ef67b0afbf27984bd17170921a3b558fac227160003d0dfd2aR283-R284","https://jira.xwiki.org/browse/XWIKI-19757"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-29T01:28:05.083974Z"},"effective_severity":"CRITICAL","badges":["epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"xwiki","vendor_name":"xwiki","product_slug":"xwiki-platform","product_name":"xwiki-platform","version_start":">= 6.2.4, < 13.10.10","version_start_inclusive":true,"version_end":">= 6.2.4, < 13.10.10","version_end_inclusive":true,"cpe23_uri":"cve5:xwiki:xwiki-platform:>= 6.2.4, < 13.10.10:>= 6.2.4, < 13.10.10"},{"vendor_slug":"xwiki","vendor_name":"xwiki","product_slug":"xwiki-platform","product_name":"xwiki-platform","version_start":">= 14.0, < 14.4.6","version_start_inclusive":true,"version_end":">= 14.0, < 14.4.6","version_end_inclusive":true,"cpe23_uri":"cve5:xwiki:xwiki-platform:>= 14.0, < 14.4.6:>= 14.0, < 14.4.6"},{"vendor_slug":"xwiki","vendor_name":"xwiki","product_slug":"xwiki-platform","product_name":"xwiki-platform","version_start":">= 14.5, < 14.9-rc-1","version_start_inclusive":true,"version_end":">= 14.5, < 14.9-rc-1","version_end_inclusive":true,"cpe23_uri":"cve5:xwiki:xwiki-platform:>= 14.5, < 14.9-rc-1:>= 14.5, < 14.9-rc-1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-x2qm-r4wx-8gpg","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/xwiki/xwiki-platform/commit/ea2e615f50a918802fd60b09ec87aa04bc6ea8e2#diff-e2153fa59f9d92ef67b0afbf27984bd17170921a3b558fac227160003d0dfd2aR283-R284","source_type":"PATCH","tags":["patch"]},{"url":"https://jira.xwiki.org/browse/XWIKI-19757","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2023-03-02T17:52:40.359000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:27:24.170440Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:27:24.170440Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:27:24.170440Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:28:05.083974Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:28:05.083974Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:28:05.083974Z","label":"SSVC decision revised","source":"vulnrichment"}]}