CVE-2026-96745

PHP object injection via unsuppressible __pclass class inference in command monitoring events

MEDIUM
5.6
CVSS Score
Published: September 24, 2026 at 03:51 PM UTC
Updated: September 24, 2026 at 09:17 PM UTC
1 product affected across 1 vendorPHP Driver

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Severity
MEDIUM5.6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Deserialization of untrusted data in the command monitoring support of the MongoDB PHP Driver can cause class names embedded in document content to be honored when the driver builds monitoring event objects. When an application registers a command monitoring subscriber and includes untrusted data in a database operation, an unauthenticated party who controls that data may cause an application class implementing the driver's persistable interface to be instantiated and its unserialization method invoked with the supplied data. The resulting impact depends on the classes available in the application.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.21.102.0.0 ≤ v < 2.1.102.2.0 ≤ v < 2.5.32.0.02.2.0
Affected range stops below 1.21.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.1.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.5.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.6MEDIUMmongodb
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-502

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