Description
MongoDB Server may experience an out-of-memory failure while evaluating expressions that produce deeply nested documents. The issue arises in recursive functions because the server does not periodically check the depth of the expression.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MongoDB | MongoDB Server | 8.0 – < 8.0.18, 7.0 – < 7.0.29, 8.2 – < 8.2.2 | 8.0.18 |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | mongodb | No fix yet | — |
| Ubuntu Pro 18.04 LTS | mongodb | No fix yet | — |
Advisories 1
- WID-SEC-2026-0386 MongoDB Server, Go Driver, Ruby Driver: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 18, 2026