Missing Authorization in YesWiki Affects Page Access Control
CVE-2026-104438

8.7HIGH

Key Information:

Vendor

Yeswiki

Status
Yeswiki
Vendor
CVE Published:
2 October 2026

What is CVE-2026-104438?

The identified vulnerability in YesWiki versions prior to 4.6.7 permits attackers without necessary privileges to exploit the listpagestag and includepages actions. By embedding specific tags or page names in these actions, an unauthorized individual can enumerate pages and gain access to sensitive information, such as the titles of pages that are otherwise restricted by access control lists (ACL). This situation exposes critical data, highlighting a significant flaw in the authorization mechanisms deployed within the application, raising concerns regarding user privacy and data integrity.

Affected Version(s)

yeswiki 0 < 4.6.7

yeswiki 4.6.7

References

https://github.com/YesWiki/yeswiki/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

skeletonsec
.