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CVE-2026-40044

CRITICAL CVSS 4.0: 9.3 EPSS 0.16%
Updated Apr 17, 2026
PHP
Parameter Value
CVSS 9.3 (CRITICAL)
Type CWE-502 (Deserialization of Untrusted Data)
Vendor PHP
Public PoC No

Pachno 1.0.6 contains a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code by injecting malicious serialized objects into cache files. Attackers can write PHP object payloads to world-writable cache files with predictable names in the cache directory, which are unserialized during framework bootstrap before authentication checks occur.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0