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TI-2026-69709 Aliases CVE-2026-106430

MongoDB C++ Driver NUL truncation confuses query and rename targets

Priority LOW 26CWE-436Published · Updated

Key facts

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

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

Summary

The MongoDB C++ Driver from 3.0.0 before 4.6.1 discards content after an embedded NUL byte in certain field and collection names accepted by the collection API. This makes the driver and the calling application interpret the same name differently, so an authenticated actor who can influence a name passed by the application can cause it to read values from an unintended field or rename an unintended collection. CWE-436 applies. The operations run with the application's existing database credentials.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

The MongoDB C++ Driver discards content after an embedded NUL byte in certain field and collection names accepted by the collection API. This can cause the driver and the calling application to interpret the same name differently. An authenticated actor who can influence a name passed by an affected application can cause the application to read distinct values from an unintended field or rename an unintended collection. These operations use the application's existing database credentials.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Fix Fixed C++ Driver (MongoDB): 4.6.1

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
MongoDBC++ Driver3.0.0 to before 4.6.14.6.1Patch availableCNA
  • C++ Driver VendorMongoDB Affected 3.0.0 to before 4.6.1 Fixed in 4.6.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:mongodb:c\+\+_driver:*:*:*:*:*:*:*:*——MongoDB
  • cpe:2.3:a:mongodb:c\+\+_driver:*:*:*:*:*:*:*:* Versions — — ·MongoDB

Remediation

Upgrade MongoDB C++ Driver to version 4.6.1 or later, which fixes the flaw. The sources do not list a vendor advisory identifier for this fix.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA C++ Driver (MongoDB) Fixed in 4.6.1

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-106430

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