CVE-2026-18692

EUVD-2026-56905
An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed. Subsequent operations could then result in a server crash or, potentially, execution of unintended code.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 45.15%
Affected Products (NVD)
VendorProductVersion
mongodbmongodb
8.0.0 ≤
𝑥
< 8.0.29
mongodbmongodb
8.2.0 ≤
𝑥
≤ 8.2.12
mongodbmongodb
8.3.0 ≤
𝑥
< 8.3.8
mongodbmongodb
9.0.0:alpha0
mongodbmongodb
9.0.0:alpha1
mongodbmongodb
9.1.0:alpha0
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
mongodb
bionic
needs-triage
focal
needs-triage
jammy
dne
noble
dne
resolute
dne
trusty
needs-triage
xenial
needs-triage
Common Weakness Enumeration
References
https://jira.mongodb.org/browse/SERVER-129887