Dashboard / CVE-2026-120807

CVE-2026-120807

HIGH
MEDIUM Priority: 0.02 BB Relevance: 50/100
Published: 2026-11-10 Modified: 2026-11-10 First seen: 2026-11-10 Status: active

Attack Surface

Network No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

A flaw in MongoDB’s X.509 cluster-membership authentication guard could allow a holder of a cluster-member certificate to gain elevated internal privileges when a specific deployment configuration is in use. An internal check, which prevents a certificate recognized as a cluster member from also being treated as a regular user, does not correctly distinguish between certain error conditions encountered during user lookup. Under certain timing conditions, this can cause the check to be bypassed, granting the connection full internal system privileges. Triggering this issue requires possession of a valid cluster-member TLS certificate, non-default X.509 cluster authentication configuration, and specific conditions during the user cache lookup process.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
MongoDB MongoDB Server 9.0.0 < 9.0.7
MongoDB MongoDB Server 8.3.0 < 8.3.16
MongoDB MongoDB Server 8.0.0 < 8.0.37
MongoDB MongoDB Server 7.0.0 < 7.0.48

References & Advisories (1)

Bug Bounty Relevance

50 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

7.5 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/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

0.23%
Raw Score 0.002270
Percentile 13.6%
Date 2026-11-12

Intelligence Sources

mitre ref →
nvd ref →

External Links