Description
User-controlled chunkSize metadata from MongoDB lacks appropriate validation allowing malformed GridFS metadata to overflow the bounding container.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MongoDB | Mongo-c-driver | < 2.1.3 | 2.1.3 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mongo-c-driver | 2.2.0-1 | — |
| Debian 13 | mongo-c-driver | 1.30.4-1+deb13u2 | — |
| Debian 12 | mongo-c-driver | 1.23.1-1+deb12u3 | — |
Advisories 1
- WID-SEC-2026-0238 MongoDB: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jan 27, 2026