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9.4

CVE-2026-89099: MongoDB Server may crash or corrupt data from normal user

CVE-2026-89099 · published 1 month ago
Summary

MongoDB Server can mishandle simultaneous requests, causing its memory to become corrupted. A regular user with read‑write rights can trigger this, potentially crashing the server and affecting the safety of stored information. Apply the latest MongoDB updates and restart the service after patching to prevent the issue.

What to do
  • Update mongodb to version 9.0.2.
  • Update mongodb mongodb server to version 8.3.11 or later.
Affected software
Ecosystem VendorProductAffected versions
– mongodb mongodb server < 8.3.11
Ubuntu:Pro:14.04:LTS canonical mongodb All versions
Bitnami – mongodb >= 9.0.0, < 9.0.2
Fix: upgrade to 9.0.2
– mongodb mongodb >= 7.0.0, < 7.0.43
>= 8.0.0, < 8.0.32
>= 8.3.0, < 8.3.11
9.0.0
9.1.0
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
Original advisory text
Race Condition in MongoDB Server Document Value Layer Leads to Memory Corruption
A race condition in the document value layer of MongoDB Server can allow concurrent server threads to operate on the same internal memory without synchronization, leading to memory corruption. An authenticated user holding ordinary read-write privileges on a database may be able to trigger this condition over the normal client protocol, resulting in server termination and potential corruption of process memory with user-influenced content. Successful use of this issue may impact the confidentiality, integrity, and availability of the affected server process.
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
9.4 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-362Race Condition
Timeline
Published11 Sep 2026
Updated4 Nov 2026
First seen11 Sep 2026
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