CVEvulnerability

CVE-2026-106431

5.9 MEDIUM Published 2026-10-08 Modified 2026-10-08 Official page ↗
Status
Undergoing Analysis
Published
2026-10-08
Last modified
2026-10-08
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:N/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])
5.7 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Weaknesses
CWE-787

Description

An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at a specific buffer boundary. An actor who can influence the size of documents serialized by an embedding application can corrupt adjacent process memory or terminate the process. Reaching this issue requires the application to use the BSON bulk-writer API and produce a precise cumulative document size.

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References