CVE-2026-25611
Publication date 10 February 2026
Last updated 27 March 2026
Ubuntu priority
Description
A series of specifically crafted, unauthenticated messages can exhaust available memory and crash a MongoDB server.
Read the notes from the security team
Why is this CVE high priority?
A remote attacker can send an unauthenticated message which could lead to a denial of service.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| mongodb | 25.10 questing | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal |
Vulnerable, fix deferred
|
|
| 18.04 LTS bionic |
Vulnerable, fix deferred
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
Notes
john-breton
Patches were released after the switch to SSPL upstream, as such we cannot use them to patch Ubuntu releases. The hope is a license-compliant third-party will make patches available in the future.
ej7367
Vulnerability relies on message compression functionality which is not present in xenial and older.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |