CVE-2026-116821

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 v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

No configuration.

History

02 Nov 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://github.com/YesWiki/yeswiki/security/advisories/GHSA-q5j6-79p7-mp94 -~~	() https://github.com/YesWiki/yeswiki/security/advisories/GHSA-q5j6-79p7-mp94 -

27 Oct 2026, 00:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-27 00:17

Updated : 2026-11-02 19:17

NVD link : CVE-2026-116821

Mitre link : CVE-2026-116821

CVE.ORG link : CVE-2026-116821

JSON object : View

Products Affected

No product.

CWE

CWE-89

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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