CVE-2026-18698CWE-863broken-access-control

CVE-2026-18698

Medium · published August 11, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
14.7
In the wild
Unconfirmed
What it is

An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that should require more specific privileges. This could result in exposure of collection metadata and, on certain deployment configurations, unauthorized modification of system collection data.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00244 · 14.7th percentile
Weakness
CWE-863 · Incorrect Authorization
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)
EPSS history
Timeline
  • 11 AUG 18:47Z
    Improper Authorization in MongoDB Server Allows Unauthorized Actions on System Collections via the validate Command
    cvelistv5