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TI-2026-60051 Aliases CVE-2026-88026GHSA-j7j2-rrxf-5xvf

Regular expression injection via unescaped characters in LINQ query translation in MongoDB C# Driver

Priority LOW 31CWE-943Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

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

Summary

Improper neutralization of regular-expression metacharacters in the LINQ query translation component of the MongoDB C# Driver can cause a caller-supplied character sequence to alter a regular-expression predicate generated by an affected application. An authenticated user who can influence such a value may cause the application to return records beyond those intended by the original filter.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00379 32nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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# Driver2.14.0 – 3.11.1—No fix listedCNA
  • C# Driver VendorMongoDB Affected 2.14.0 – 3.11.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mongodb:c\#_driver:*:*:*:*:*:mongodb:*:*2.14.0 to before 3.11.2VulnerableMongoDB
  • cpe:2.3:a:mongodb:c\#_driver:*:*:*:*:*:mongodb:*:* Versions 2.14.0 to before 3.11.2 Vulnerable ·MongoDB

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-88026
  2. 2026-10-03 Alias added: GHSA-j7j2-rrxf-5xvf

References

Advisory 1

  • TI-2026-56248 NoSQL injection via unquoted constant GroupBy keys in LINQ pipeline translation CVSS 4.0MEDIUM 6.9
  • TI-2022-23899 Deserializing compromised object with MongoDB .NET/C# Driver may cause remote code execution CVSS 3.1HIGH 7.2
  • TI-2026-56250 Connection-option injection via unescaped settings in the canonical MongoDB URL builder CVSS 4.0HIGH 7.1
  • TI-2026-56251 KMS master key exposure via unredacted credential serialization in driver settings string CVSS 4.0MEDIUM 6.8
  • TI-2026-60050 GridFS data disclosure and deletion via query-operator injection in file IDs in the MongoDB C# Driver CVSS 4.0MEDIUM 6.1
  • TI-2026-56249 NoSQL injection via array replacement bypassing update shape validation in driver write path CVSS 4.0MEDIUM 5.3
See all 7 →

Sources

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