# CVE-2026-96745: PHP object injection via unsuppressible __pclass class inference in command monitoring events

> An attacker can trigger PHP object injection in the MongoDB PHP Driver by controlling database content, potentially leading to code execution if vulnerable classes are present.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** DEBIAN-CVE-2026-96745, GHSA-cmvj-vxvq-rh2c, UBUNTU-CVE-2026-96745

## What is CVE-2026-96745?

CVE-2026-96745 is a medium-severity unsafe deserialization vulnerability in MongoDB PHP Driver, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2026-96745?


## How do I fix CVE-2026-96745?

Upgrade to a fixed version.

## Is CVE-2026-96745 being exploited?

There is no known exploitation of CVE-2026-96745 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-96745 and fix it if it is affected.

What it is: CVE-2026-96745 is a medium-severity unsafe deserialization vulnerability in MongoDB PHP Driver, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-96745 in the wild and no public exploit code.

Affected product: MongoDB PHP Driver. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-96745/ (Markdown: https://insights.sbomify.com/CVE-2026-96745/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-96745
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-96745
- OSV: https://osv.dev/vulnerability/CVE-2026-96745

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-96745/
Summaries are generated and may contain mistakes; the official description above is the record.