CVE-2026-120955
High
Description
The GridFS file download API in the MongoDB C Driver does not check the result of an internal operation under certain error conditions during file retrieval. This can cause the process to terminate when stream operations continue. A user who can influence file download parameters can trigger this condition, which may result in service unavailability for applications using the affected API.
SeverityHigh
CVSS7.5
Exploit probability—
Product
C Driver
PublishedNov 3, 2026
First seenNov 4, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| MongoDB C Driver | 1.25.0 ≤ v ≤ 1.30.14, 2.0.0 ≤ v ≤ 2.5.7 | — |
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