CVE-2026-18711CWE-416

CVE-2026-18711

High · published August 11, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
41.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00494 · 41.5th percentile
Weakness
CWE-416 · Use After Free
Published
2026-08-11T23:17Z
Affected products (7)
ProductVersionsFixed in
mongodb/mongodb≥ 7.0.0, ≤ 7.0.40—
mongodb/mongodb≥ 8.0.0, < 8.0.298.0.29
mongodb/mongodb≥ 8.2.0, ≤ 8.2.12—
mongodb/mongodb≥ 8.3.0, < 8.3.88.3.8
mongodb/mongodball versions—
mongodb/mongodball versions—
mongodb/mongodball versions—
References (1)
EPSS history
Timeline
  • 11 AUG 18:48Z
    Use-After-Free in MongoDB Query Execution Engine Leads to Denial of Service and Potential Memory Disclosure
    cvelistv5