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VulnerabilityPublished

CVE-2026-120810: MongoDB Server · Unthrottled Resource Allocation

Affects MongoDB ServerSource CVE Database V5

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Not known to be exploited · CVSS 7.1 High · fixed in 9.0.7 : patch MongoDB Server soon.

Data as of 10 Nov 2026, 20:47 UTC

CVSS 4.0 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (mongodb)CVSS 4.07.1
CNA (mongodb)CVSS 3.16.5
Patch
Available – fixed in 9.0.7, 8.3.16, 8.0.37 +1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade MongoDB Server to 9.0.7, 8.3.16, 8.0.37 or 7.0.48.

Affected software

ProductAffectedFixed in
MongoDBMongoDB ServerAffected
  • >=9.0.0 <9.0.7
Fixed in
  • 9.0.7
MongoDBMongoDB ServerAffected
  • >=8.3.0 <8.3.16
Fixed in
  • 8.3.16
MongoDBMongoDB ServerAffected
  • >=8.0.0 <8.0.37
Fixed in
  • 8.0.37
MongoDBMongoDB ServerAffected
  • >=7.0.0 <7.0.48
Fixed in
  • 7.0.48

AI-suggested

Fixed versions are available: upgrade to MongoDB Server 7.0.48, 8.0.37, 8.3.16, or 9.0.7 or later. Applying these official fixes will prevent exploitation of this vulnerability. No additional mitigation actions are indicated.

Description

CVE-2026-120810 is a high-severity vulnerability in MongoDB Server's aggregation framework that allows an authenticated user with read privileges to cause a denial of service. The issue arises from an internal expression accessible to any authenticated client that triggers unbounded memory allocations without limits. By sending specially crafted aggregate commands concurrently, an attacker can exhaust server memory, causing the mongod process to be terminated by the operating system's out-of-memory killer. Fixed versions are available for multiple MongoDB releases.

References

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