Vulnerability Intelligence Report
YesWiki: Authenticated PHP Object Injection in BazarImportAction via unserialize
CVE-2026-52777
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.
Deserialization
No Active Exploit Signals
CVSS Base Score
9.4
CRITICAL
EPSS Probability:0.21%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
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SSVC Action
—
Weaknesses (CWE)
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| YesWiki | yeswiki | < 4.6.6 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-06-08T17:13:43 |
| Published | 2026-09-04T23:51:46 |
| Last Updated | 2026-09-08T18:43:27 |
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