CVE-2026-84968 Heap out-of-bounds read via corrupt nested BSON in field path error message

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...

CVE-2026-84968

An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver can be triggered by an unauthenticated party supplying specially crafted input containing corrupt nested BSON in a field path. This causes a small amount of adjacent process memory to be copied into an error message re...