CVE-2026-84968

MEDIUMCVSS 5.3/10EPSS 0.20%

Last modified

CVE-2026-84968 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

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.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
MongodbPhp Driver>= 1.15.0, < 1.21.9
MongodbPhp Driver>= 2.0.0, < 2.1.9
MongodbPhp Driver>= 2.2.0, < 2.5.2

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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 copied into an error message that is returned to application code. This may result in unintended disclosure of limited memory contents.
How severe is CVE-2026-84968?
CVE-2026-84968 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.
How do I fix CVE-2026-84968?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST