Dashboard / CVE-2026-18688

CVE-2026-18688

HIGH
MEDIUM Priority: 0.03 BB Relevance: 64/100
Published: 2026-08-11 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: Low
VI: None
VA: High

Description

An issue in MongoDB Server's aggregation framework could allow an authenticated user to trigger an out-of-bounds memory read by providing a specially formed numeric parameter in a certain aggregation pipeline stage. This could result in a server crash (denial of service) and may potentially expose a limited amount of memory contents.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
mongodb mongodb 7.0.0 – 7.0.40
mongodb mongodb 9.0.0
mongodb mongodb 9.0.0
mongodb mongodb 9.1.0

References & Advisories (1)

https://jira.mongodb.org/browse/SERVER-129617
Vendor Advisory Issue Tracking

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.40%
Raw Score 0.003990
Percentile 34.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00399
2026-10-28
0.00399

Intelligence Sources

nvd ref →

External Links