MongoDB
CVE-2026-120954: A weakness in the BSON library's handling of a specialized binary vector data type allows an arithmetic wraparound when computing the number of elements describ
CVE-2026-120954 Nov 3, 2026 Source: Vendor
A weakness in the BSON library's handling of a specialized binary vector data type allows an arithmetic wraparound when computing the number of elements described by an oversized attacker-supplied value. On builds where the platform word size is 32 bits, an application that parses untrusted BSON data can be made to process only a small fraction of the supplied elements while the operation reports success, producing results that disagree with byte-oriented accessors and with 64-bit builds of the
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The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-120954
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