Vulnerability in MongoDB C# Driver
CVE-2026-114648
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.
Published .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-114648?
- CVE-2026-114648 is a high-severity vulnerability in MongoDB C# Driver, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 7.6/10. Published 2026-10-22.
- How severe is CVE-2026-114648?
- High severity. CVSS v3 base score is 7.6 out of 10.