{"id":"CVE-2026-104450","summary":"YesWiki before 4.6.7 ACL Bypass and Stored XSS via pointimage Action","details":"YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage action (tools/attach/actions/pointimage.php), which saves content to an attacker-chosen page with write ACL checks bypassed. Unauthenticated attackers can POST pagetag, title, and description fields to any page rendering {{pointimage}} to append raw HTML or JavaScript to any wiki page, including pages whose write ACL restricts editing, causing stored cross-site scripting in viewers' and administrators' browsers.","aliases":["GHSA-7547-q56p-h99v"],"modified":"2026-10-04T02:45:58.538656154Z","published":"2026-10-02T11:38:22.393Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104450.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-79"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104450.json"},{"type":"ADVISORY","url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7547-q56p-h99v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104450"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-acl-bypass-and-stored-xss-via-pointimage-action"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/yeswiki/yeswiki","events":[{"introduced":"0"},{"fixed":"07120ed8971047f504f7ec78060828f1895f475f"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION"],"extracted_events":[{"introduced":"0"},{"fixed":"4.6.7"}]}}],"versions":["v4.6.6","v4.6.5","v4.6.4","v4.6.3","v4.6.2","v4.6.0","v4.5.5","v4.5.4","v4.5.3","v4.5.2","v4.5.1","v4.4.3","v4.4.2","v4.4.1","v4.4.0","v4.3.1","v4.3.0","v4.2.2","v4.2.1","v4.2.0","v4.1.5","v4.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104450.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:L/SA:N"}]}