SEPTEMBER 17, 2026
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Case File

CVE-2026-52773

MEDIUM · CVSS 6.1 EPSS 0.48% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-05 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

YesWiki versions 4.1.0 to 4.6.5 are vulnerable to a reflected cross-site scripting (XSS) attack due to improper handling of the archived revision timestamp in the page display functionality. This vulnerability allows attackers to inject arbitrary JavaScript into the victim's browser, potentially compromising user data and session integrity, particularly for users with read and write access to the affected pages. Organizations using YesWiki should prioritize upgrading to version 4.6.6 or later, especially if their deployment allows anonymous editing of public pages.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-52773
Severity
MEDIUM
CVSS
6.1
EPSS
0.48%
Java

Original NVD Description

YesWiki is a wiki system written in PHP. From version 4.1.0 to before version 4.6.6, YesWiki's archived-revision view reflects the time GET parameter into a hidden HTML input in handlers/page/show.php without escaping. Because MySQL coerces malformed DATETIME strings, an attacker can append HTML or JavaScript to a valid archived revision timestamp, still load that archived revision, and execute arbitrary JavaScript in the victim's browser. The vulnerable form is only rendered when the victim can both read and edit the target page. In restricted deployments this requires a victim with read and write access to that page. On a default doryphore 4.6.5 install, public pages such as PagePrincipale were editable anonymously during validation, so the issue can also affect unauthenticated visitors in that configuration. This issue has been patched in version 4.6.6.