CVE-2026-116821

YesWiki before 4.7.0 Read-ACL Bypass via SQL LIKE Wildcards in Usernames

MEDIUM
6.5
CVSS Score
Published: October 26, 2026 at 11:05 PM UTC
Updated: October 27, 2026 at 12:17 AM UTC
1 product affected across 1 vendorYesWiki

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
Vendor states this is fixed in 4.7.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

6.5MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-89

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