CVE-2026-81525highCWE-943

CVE-2026-81525: high-severity vulnerability in MongoDB PHP Extension

Cross-tenant database retargeting via dot/NUL injection in namespace strings in the PHP Driver

Published · Updated

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.6epss 0.5%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
MongoDB · PHP ExtensionMongoDB · PHP Library