CVE-2026-116821

6.5 MEDIUMpublic exploit available

Published 2026-10-27 · Updated 2026-10-27

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weaknesses

CWE-89

Public exploit & PoC references

https://github.com/YesWiki/yeswiki/commit/f3b0dd093a7ace47dc29a515faeb02635baceae2
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-q5j6-79p7-mp94

All references

https://github.com/YesWiki/yeswiki/commit/f3b0dd093a7ace47dc29a515faeb02635baceae2
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-q5j6-79p7-mp94
https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-read-acl-bypass-via-sql-like-wildcards-in-usernames

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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