{"id":"CVE-2026-116821","aliases":[],"title":"YesWiki before 4.7.0 Read-ACL Bypass via SQL LIKE Wildcards in Usernames","titleSource":"VulnCheck","descriptionSource":"VulnCheck","products":[{"vendor":"YesWiki","name":"yeswiki","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"4.7.0","versionType":"semver"},{"version":"4.7.0","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-116821"}],"remediation":[],"description":"YesWiki before 4.7.0 contains a read-ACL bypass in AclService::updateRequestWithACL, which interpolates usernames into SQL LIKE patterns without escaping the _ and % wildcards. Self-registered attackers can use usernames such as ___ or %%% that over-match ACL tokens, reading pages and Bazar entries restricted to other users or groups via the public Bazar listing API.","severity":"high","score":7.1,"published":"2026-10-26T23:05:47.763Z","modified":"2026-10-26T23:05:47.763Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/YesWiki/yeswiki/security/advisories/GHSA-q5j6-79p7-mp94","https://github.com/YesWiki/yeswiki/commit/f3b0dd093a7ace47dc29a515faeb02635baceae2","https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-read-acl-bypass-via-sql-like-wildcards-in-usernames"],"sources":[{"name":"CVE","id":"CVE-2026-116821","modified":"2026-10-26T23:05:47.763Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116821"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":7.1},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:50:31.340Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}