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TI-2026-84563 Aliases CVE-2026-120959GHSA-g8hv-jrw6-9rw3

Out-of-bounds write in MongoDB Atlas SQL ODBC Driver result buffers

Priority LOW 11CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

MongoDB Atlas SQL ODBC Driver from 1.3.0 before 3.0.1 has a memory-handling flaw (CWE-787) that can write query results outside the bounds of a buffer the calling application provides. A party able to influence the values a query returns can place data at an unintended memory location, which may modify client memory or terminate the client process. Exploitation depends on the application requesting several result rows at once in a specific way.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00224 13th percentileScored 2026-11-07
Fix Fixed Atlas SQL (MongoDB): 3.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MongoDBAtlas SQL1.3.0 to before 3.0.13.0.1Patch availableCNA
  • Atlas SQL VendorMongoDB Affected 1.3.0 to before 3.0.1 Fixed in 3.0.1 Patch available CNA

Remediation

MongoDB Atlas SQL ODBC Driver 3.0.1 contains the fix. Versions from 1.3.0 before 3.0.1 are affected.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA Atlas SQL (MongoDB) Fixed in 3.0.1

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-120959
  2. 2026-11-03 Alias added: GHSA-g8hv-jrw6-9rw3
  3. 2026-11-06 CISA SSVC decision points changed

References

Other 2

  • TI-2019-08023 Code injection in mongo-express KEVCVSS 3.1CRITICAL 9.9
  • TI-2025-13542 Zlib compressed protocol header length confusion may allow memory read KEVCVSS 4.0HIGH 8.7
  • TI-2026-79432 BSON output corruption via out-of-range binary subtype in MongoDB C# Driver CVSS 4.0MEDIUM 6.9
  • TI-2026-79424 NoSQL command injection via mismatched BSON length in MongoDB C# Driver CVSS 4.0MEDIUM 6.9
  • TI-2026-79422 Unbounded memory growth in MongoDB C# Driver BSON deserialization CVSS 4.0HIGH 8.2
  • TI-2026-79427 Authentication bypass via issuer-and-serial-only certificate equality CVSS 4.0HIGH 7.6
See all 376 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences