CVE-2026-114648 NoSQL injection via dot and dollar characters in LINQ filter field names and dictionary keys
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-114648?
CVE-2026-114648 is a high-severity vulnerability in MongoDB C# Driver, published on 22 Oct 2026.
Official 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.
Weakness: CWE-943
Which versions are affected by CVE-2026-114648?
How do I fix CVE-2026-114648?
No fix has been published for CVE-2026-114648 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-114648 being exploited?
There is no known exploitation of CVE-2026-114648 in the wild and no public exploit code.
Sources
Also known as GHSA-2xqr-fxmx-2cmf.