The BSON encoder in the MongoDB PHP Driver converts a string length to a 32-bit value without validation. When an affected application encodes a string near 4 GiB, the allocation size can wrap while the copy operation uses the original length. The resulting heap buffer overflow can corrupt process memory or terminate the PHP process. Reaching this issue requires a non-default runtime configuration that permits multi-gigabyte values. No MongoDB server interaction is required.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-1ed9f02b1e advisory.

    ## Version 2.1.12

    Release Highlights

    -    PHPC-276: Prevent stack exhaustion when decoding deeply nested BSON
    -    PHPC-276: Enforce the decode nesting limit for CodeWScope scopes


    ----

    ## Version 2.1.11

    Release Highlights

    -    PHPC-2739: Check returns of BSON append operations. **CVE-2026-106436**
    -    PHPC-2741: Add additional length BSON length checks. **CVE-2026-106432**

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-4a5aaed9f5 advisory.

    ## Version 2.1.12

    Release Highlights

    -    PHPC-276: Prevent stack exhaustion when decoding deeply nested BSON
    -    PHPC-276: Enforce the decode nesting limit for CodeWScope scopes


    ----

    ## Version 2.1.11

    Release Highlights

    -    PHPC-2739: Check returns of BSON append operations. **CVE-2026-106436**
    -    PHPC-2741: Add additional length BSON length checks. **CVE-2026-106432**

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The BSON encoder in the MongoDB PHP Driver converts a string length to a 32-bit value without validation.
    When an affected application encodes a string near 4 GiB, the allocation size can wrap while the copy     operation uses the original length. The resulting heap buffer overflow can corrupt process memory or     terminate the PHP process. Reaching this issue requires a non-default runtime configuration that permits     multi-gigabyte values. No MongoDB server interaction is required. (CVE-2026-106432)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
371747	Fedora 43 : php-pecl-mongodb2 (2026-1ed9f02b1e)	Nessus	Fedora Local Security Checks	Local	medium
371745	Fedora 44 : php-pecl-mongodb2 (2026-4a5aaed9f5)	Nessus	Fedora Local Security Checks	Local	medium
364528	Linux Distros Unpatched Vulnerability : CVE-2026-106432	Nessus	Misc.	Local	low

Detections

Analytics

CVE-2026-106432

low

Tenable Plugins

medium

medium

low