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CVE-2026-120959— MongoDB Atlas SQL ODBC Driver uses ignored SQLBindCol BufferLength as fixed-width row-array stride, causing out-of-bounds writes

Quick assessment

Affected
MongoDB Atlas SQL
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MongoDB Atlas SQL ODBC 驱动中存在一个内存处理缺陷，可能导致查询返回的值被写入到调用应用程序所提供的缓冲区范围之外。能够影响查询返回值的攻击者，可将数据写入客户端应用程序内存中的非预期位置，从而造成该内存被意外修改，或导致客户端进程终止。触发此漏洞取决于应用程序所选择的一种特定方式，即一次性请求多行结果。

CVSS 3.7 · Low

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-120959

Vulnerability Information
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Vulnerability Title
MongoDB Atlas SQL ODBC Driver uses ignored SQLBindCol BufferLength as fixed-width row-array stride, causing out-of-bounds writes
Source: CVE Program / CVE List V5
Vulnerability Description
A memory-handling flaw in the MongoDB Atlas SQL ODBC Driver can cause values returned for a query to be written outside the bounds of a buffer provided by the calling application. A party able to influence the values a query returns may cause data to be placed at an unintended location in the client application's memory, which may result in unintended modification of that memory or termination of the client process. Reaching this condition depends on a specific, application-chosen way of requesting several result rows at once.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MongoDB Atlas SQL 1.3.0 ~ 3.0.1 -

II. Public POCs for CVE-2026-120959

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III. Intelligence Information for CVE-2026-120959

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Vendor Pages for CVE-2026-120959 (1)

Other References for CVE-2026-120959 (1)

Same Patch Batch · MongoDB · 2026-11-03 · 15 CVEs total

CVE-2026-119675 8.6 HIGH mongorestore may bypass collection guards through a system.buckets prefix
CVE-2026-120678 7.5 HIGH MongoDB C Driver leaks the decompressed reply buffer when an OP_COMPRESSED reply fails to
CVE-2026-120955 7.5 HIGH MongoDB C Driver Modern GridFS mongoc_gridfs_bucket_download_to_stream() Aborts Applicatio
CVE-2026-120956 7.1 HIGH remote abort and memory disclosure from a malformed cursor.ns
CVE-2026-120952 7.1 HIGH MongoDB Atlas SQL ODBC Driver writes 48-byte Extended JSON into fixed 16-byte SQL_C_GUID t
CVE-2026-119179 7.0 HIGH MongoDB Node.js driver: Connection pool desynchronization after operation timeout can expo
CVE-2026-120684 6.5 MEDIUM MongoDB C Driver GridFS gap lets a shared writer recover a protected client's password
CVE-2026-120673 5.5 MEDIUM Rust Driver 3.9.1 exports CSFLE plaintext in `db.query.text` before encrypting the command
CVE-2026-120567 5.4 MEDIUM ExecuteUpdate may evaluate caller-supplied values as MongoDB expressions
CVE-2026-119672 4.8 MEDIUM mongofiles may disclose GridFS content to standard output through a stored filename
CVE-2026-120953 4.3 MEDIUM Atlas SQL JDBC Driver <=4.0.0: OIDC discovery endpoints not scheme-validated - attacker-co
CVE-2026-119674 3.7 LOW mongorestore may restore encoded collection names into an unintended collection
CVE-2026-120954 3.7 LOW Silent element-count truncation via 32-bit bit-length overflow in packed-bit vector views
CVE-2026-119673 2.8 LOW mongofiles may write outside the working directory through a symlink

IV. Related Vulnerabilities

Same vendor: MongoDB
Same weakness: CWE-787