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MEDIUM · 5.3

CVE-2026-84968

An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory ...

Vulnerability Description

An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory copied into an error message that is returned to application code. This may result in unintended disclosure of limited memory contents.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
MongodbPhp Driver>= 1.15.0, < 1.21.9

Related Weaknesses (CWE)

CWE-125

References

FAQ

What is CVE-2026-84968?

CVE-2026-84968 is a vulnerability with a CVSS score of 5.3 (MEDIUM). An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory ...

How severe is CVE-2026-84968?

CVE-2026-84968 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-84968?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Php Driver.