UpHeron
All vulnerabilities

Servers and applications

CVE-2026-18711

An issue in MongoDB Server's query execution engine could allow an authenticated user with read and write privileges to cause an internal reference to be used after the underlying memory has been freed, when running certain queries against time-series collections. This could result in a server crash or disclosure of freed memory contents within query results.

Severity
High 7.1
Published
11 Aug 2026
Last changed
25 Sept 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.0.29, 8.3.8
Sources
NVD

Affected software

SoftwareAffected versions
MongoDBServers and applications · cpe:a:mongodb:mongodb
  • Version 9.1.0-alpha0
  • Version 9.0.0-alpha1
  • Version 9.0.0-alpha0
  • From 8.3.0 before 8.3.8
All 7 release lines
  • From 7.0.0 up to 7.0.40
  • From 8.0.0 before 8.0.29
  • From 8.2.0 up to 8.2.12
  • From 8.3.0 before 8.3.8
  • Version 9.0.0-alpha0
  • Version 9.0.0-alpha1
  • Version 9.1.0-alpha0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-18711
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-18711