Vulnerability Description
The MongoDB client library for PHP does not sufficiently sanitize special elements in application-supplied namespace identifiers before using them to construct the target namespace for database operations. An application that incorporates untrusted text into these identifiers may have operations silently directed at a different storage location than the one the application intended.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/mongodb/mongo-php-driver/releases/tag/1.21.6
- https://github.com/mongodb/mongo-php-driver/releases/tag/2.4.1
- https://github.com/mongodb/mongo-php-library/releases/tag/1.21.4
- https://github.com/mongodb/mongo-php-library/releases/tag/2.4.1
- https://jira.mongodb.org/browse/PHPLIB-1927
FAQ
What is CVE-2026-81525?
CVE-2026-81525 is a vulnerability with a CVSS score of 8.1 (HIGH). The MongoDB client library for PHP does not sufficiently sanitize special elements in application-supplied namespace identifiers before using them to construct the target namespace for database operat...
How severe is CVE-2026-81525?
CVE-2026-81525 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-81525?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.