SQL Injection Vulnerability in YesWiki
CVE-2026-52771

8.3HIGH

Key Information:

Vendor

Yeswiki

Status
Yeswiki
Vendor
CVE Published:
4 September 2026

What is CVE-2026-52771?

YesWiki, a PHP-based wiki system, is susceptible to an SQL injection vulnerability impacting versions from 4.2.0 up until 4.6.5. The flaw originates in the ApiController::deletePage() function, which improperly interpolates user-supplied page tags into SQL queries without adequate escaping. This permits low-privilege, authenticated users to craft page tags that can function as SQL fragments. When these tags are used, attackers can execute arbitrary SQL queries against the database, including the ability to perform blind data exfiltration from any table. The vulnerability has been addressed in version 4.6.6.

Affected Version(s)

yeswiki >= 4.2.0, < 4.6.6

References

https://github.com/YesWiki/yeswiki/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/YesWiki/yeswiki/commit/23d3cc124613b94...
x_refsource_MISC
https://github.com/YesWiki/yeswiki/releases/tag/v4.6.6
x_refsource_MISC

CVSS V3.1

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.