SEPTEMBER 14, 2026
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Case File

CVE-2026-52777

CRITICAL · CVSS 9.4 EPSS 0.21% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-05 · Last synced 2026-09-14

CyberRota Analysis

AI-Generated

YesWiki versions prior to 4.6.6 are vulnerable to an authenticated PHP object injection flaw in the BazarImportAction component, which can be exploited to execute arbitrary code. This critical vulnerability, with a CVSS score of 9.4, poses a significant risk to any organization using affected versions of YesWiki. Administrators should prioritize updating to version 4.6.6 or later to mitigate potential exploitation.

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-2026-52777
Severity
CRITICAL
CVSS
9.4
EPSS
0.21%

Original NVD Description

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, there is an authenticated PHP object injection vulnerability in BazarImportAction via unserialize. This issue has been patched in version 4.6.6.