CVE-2026-82064: CWE-617: Reachable Assertion in MongoDB MongoDB Server
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.
AI Analysis
Technical Summary
This vulnerability in MongoDB Server involves an assertion in the read concern processing logic that can be reached without authentication. The assertion's assumptions about internal state do not hold for all replica set member configurations, which leads to the server process terminating when triggered by an unauthenticated network user. The issue affects specific versions of MongoDB Server (7.0.0, 8.0.0, and 8.3.0). No official patch or remediation level has been provided at this time.
Potential Impact
An unauthenticated attacker can cause a denial of service on affected MongoDB Server instances by triggering an assertion failure that terminates the server process. This disrupts availability of the database service on specific replica set members.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to MongoDB Server instances and replica set members to trusted clients only to reduce exposure.
CVE-2026-82064: CWE-617: Reachable Assertion in MongoDB MongoDB Server
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.
CVSS v4.0
Score 8.7high
Affected software
pkg:github/mongodb/mongoRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in MongoDB Server involves an assertion in the read concern processing logic that can be reached without authentication. The assertion's assumptions about internal state do not hold for all replica set member configurations, which leads to the server process terminating when triggered by an unauthenticated network user. The issue affects specific versions of MongoDB Server (7.0.0, 8.0.0, and 8.3.0). No official patch or remediation level has been provided at this time.
Potential Impact
An unauthenticated attacker can cause a denial of service on affected MongoDB Server instances by triggering an assertion failure that terminates the server process. This disrupts availability of the database service on specific replica set members.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to MongoDB Server instances and replica set members to trusted clients only to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mongodb
- Date Reserved
- 2026-08-27T22:52:29.008Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa03a28acd9273b49ec3658
Added to database: 09/08/2026, 16:39:04 UTC
Last enriched: 09/08/2026, 16:52:57 UTC
Last updated: 09/09/2026, 00:23:06 UTC
Views: 9
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