CVE-2026-18697CWE-617

CVE-2026-18697

High · published August 11, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
37.2
In the wild
Unconfirmed
What it is

An issue in MongoDB Server's aggregation framework could allow an unauthenticated party to cause a mongos (router) process to terminate unexpectedly by submitting a specially formed aggregation command. This could result in a denial of service, disrupting client connections routed through the affected mongos instance.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00440 · 37.2th percentile
Weakness
CWE-617 · Reachable Assertion
Published
2026-08-11T23:17Z
Affected products (7)
ProductVersionsFixed in
mongodb/mongodb≥ 7.0.0, < 7.0.407.0.40
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)
https://jira.mongodb.org/browse/SERVER-130110 · [email protected]
EPSS history
Timeline
  • 11 AUG 18:39Z
    Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial of Service on mongos
    cvelistv5