CVE-2026-88025 GridFS data disclosure and deletion via query-operator injection in file IDs in the MongoDB C# Driver
An authenticated user can inject query operators into file IDs to read unauthorized file content or delete all chunks in a GridFS bucket.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88025?
CVE-2026-88025 is a medium-severity SQL injection vulnerability in MongoDB C# Driver, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB C# Driver can cause a caller-supplied structured file identifier to be interpreted as a query condition rather than as a literal identifier. An authenticated user who can influence the identifier passed by an affected application may obtain stored file content beyond the intended target or cause all GridFS file chunks in the affected bucket to be removed, rendering stored file content unreadable. The affected rename operation may also rename a stored file other than the intended target.
Weakness: CWE-943
Which versions are affected by CVE-2026-88025?
It affects 1 product.
Products include Mongodb C\# Driver.
How do I fix CVE-2026-88025?
No fix has been published for CVE-2026-88025 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-88025 being exploited?
There is no known exploitation of CVE-2026-88025 in the wild and no public exploit code.
Other vulnerabilities in MongoDB C# Driver
- CVE-2026-88026 Regular expression injection via unescaped characters in LINQ query translation in MongoDB C# Driver
- CVE-2026-81529 Connection-option injection via unescaped settings in the canonical MongoDB URL builder
- CVE-2026-81527 NoSQL injection via unquoted constant GroupBy keys in LINQ pipeline translation
- CVE-2026-81530 KMS master key exposure via unredacted credential serialization in driver settings string
- CVE-2022-48282 Deserializing compromised object with MongoDB .NET/C# Driver may cause remote code execution
Sources
Also known as GHSA-m8p4-wmg5-p4x3.