PHP object injection via unsuppressible __pclass class inference in command monitoring events (CVE-2026-96745) | HOL Guard CVE

Medium · CVSS 6.3CVE-2026-96745

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

Answer in brief

CVE-2026-96745 records a Medium severity (CVSS 6.3) vulnerability in PHP object injection via unsuppressible __pclass class inference in command monitoring events. The current sources do not mark it as known exploited. The current feed maps MongoDB/PHP Driver (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps MongoDB/PHP Driver (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
MongoDB/PHP Drivergeneric	>=0 <1.21.10 \|\| >=2.0.0 <2.1.10 \|\| >=2.2.0 <2.5.3	1.21.10, 2.1.10, 2.5.3

Recommended response

Check inventory. Check lockfiles and deployed manifests for MongoDB/PHP Driver.
Review the reported fix. Update MongoDB/PHP Driver to 1.21.10 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.