CVE-2026-81525

CVE-2026-81525 is a cross-tenant database retargeting vulnerability in the MongoDB client library for PHP (mongo-php-library and mongo-php-driver). The root cause is insufficient sanitization of dot and NUL characters in application-supplied namespace identifiers, allowing an attacker with low pr...

CVE-2026-81525 Cross-tenant database retargeting via dot/NUL injection in namespace strings in the PHP Driver

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...

CVE-2026-81523 Cross-tenant database retargeting via dot/NUL injection in namespace strings in libmongocrypt

A missing input-validation issue in MongoDB libmongocrypt's automatic-encryption context setup allows a caller-supplied database identifier to be accepted without sanitization. The resulting impact is limited to incorrect schema selection, which may lead to limited disclosure or modification of...

CVE-2026-81523

A missing input-validation flaw in MongoDB libmongocrypt 's automatic-encryption context setup allows a caller-supplied database identifier to be accepted without sanitization. The CVELIST record further specifies the mechanism as dot/NUL injection in namespace strings, enabling cross-tenant data...

CVE-2026-81522 Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C++ Driver

A weakness in the MongoDB C++ Driver's handling of caller-supplied namespace identifiers allows special characters embedded in those identifiers. An application that builds a namespace identifier from untrusted input without validating it may therefore have its operation directed at a different...

CVE-2026-81522

CVE-2026-81522 affects the MongoDB C++ Driver and involves improper handling of caller-supplied namespace identifiers. The root cause is that special characters—specifically dot and NUL characters —embedded in those identifiers can cause an application's operation to be directed at a different da...