CVE-2026-114648

NoSQL injection via dot and dollar characters in LINQ filter field names and dictionary keys

HIGH
7.6
CVSS Score
Published: October 22, 2026 at 07:13 PM UTC
Updated: October 23, 2026 at 07:45 PM UTC
1 product affected across 1 vendorC++ Driver

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Severity
HIGH7.6
Exploit prediction
EPSS 0.3%

Description

The MongoDB C# Driver does not neutralize dot and dollar characters in dictionary keys, field names and array-filter identifiers used in LINQ queries before placing them into the field paths it sends to the server. An application user whose input reaches these positions can redirect a query or update to fields the application did not name, which can expose other users' documents and widen updates beyond the intended data. Certain values can also write malformed fields that leave stored documents unreadable by the application until they are repaired.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

7.6HIGHmongodb
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-943

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