CVEvulnerability

CVE-2026-84970

5.9 MEDIUM Published 2026-09-03 Modified 2026-09-10 Official page ↗
Status
Analyzed
Published
2026-09-03
Last modified
2026-09-10
Assigner
[email protected]
CVSS 4.0 ([email protected])
5.9 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
6.2 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
CVSS 3.1 ([email protected])
5.8 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
Weaknesses
CWE-681

Description

A numeric truncation weakness exists in the JSON parsing component of the MongoDB C++ Driver's BSON library. An actor who controls the text that an embedding application hands to the library's public JSON parsing interface, when that text is very large, can cause the library to read memory beyond the supplied buffer and return it to the caller, to silently accept only part of the input as a complete document, or to terminate the process. No MongoDB server, credentials, or non-default configuration is required; the effect is confined to the process that uses the library.

Affected configurations

• mongodb c\+\+ driver (>= 3.2.0 < 4.5.2)

Related

Weakness · CWE (1)

  • CWE-681 Incorrect Conversion between Numeric Types weakness

References