CVE-2026-82064

Unauthenticated Denial of Service in MongoDB Server via Assertion Failure in Read Concern Processing on Replica Set Members

HIGH
7.5
CVSS Score
Published: September 8, 2026 at 04:12 PM UTC
Updated: September 16, 2026 at 08:54 PM UTC
1 product affected across 1 vendorMongoDB

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

A security issue in MongoDB Server allows an unauthenticated network user to cause a denial of service on a specific type of replica set member. The server contains an assertion in its read concern processing logic that can be reached without authentication, and the assertion's assumptions about internal state do not hold for all member configurations, causing the server process to terminate.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.0.0 ≤ v < 7.0.418.0.0 ≤ v < 8.0.308.3.0 ≤ v < 8.3.97.0.08.0.08.3.0
Affected range stops below 7.0.41, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.30, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.3.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

Vendor AdvisoryIssue Tracking
Source: cverecord
https://jira.mongodb.org/browse/SERVER-130759

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHmongodb
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-617

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