An issue in MongoDB Server's aggregation framework could allow an unauthenticated party to cause a mongos (router) process to terminate unexpectedly… (CVE-2026-18697)
A vulnerability in MongoDB Server's aggregation framework allows an unauthenticated attacker to cause the mongos router process to terminate unexpectedly by sending a specially crafted aggregation command. This results in a denial of service, disrupting client connections routed through the affected mongos instance.
AI Analysis
Technical Summary
CVE-2026-18697 is a denial of service vulnerability in MongoDB Server's aggregation framework. An unauthenticated attacker can submit a specially formed aggregation command to a mongos (router) process, causing it to terminate unexpectedly. This disrupts client connections that rely on the affected mongos instance. The vulnerability is identified as CWE-617 (Reachable Assertion). No information about affected versions or patches is provided in the available data.
Potential Impact
The impact is a denial of service (DoS) condition affecting the mongos router process in MongoDB Server. This can disrupt client connections routed through the affected mongos, potentially causing service interruptions. There is no indication of confidentiality or integrity impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided. Until a patch is available, consider limiting exposure of mongos endpoints to untrusted networks to reduce risk.
An issue in MongoDB Server's aggregation framework could allow an unauthenticated party to cause a mongos (router) process to terminate unexpectedly… (CVE-2026-18697)
Description
A vulnerability in MongoDB Server's aggregation framework allows an unauthenticated attacker to cause the mongos router process to terminate unexpectedly by sending a specially crafted aggregation command. This results in a denial of service, disrupting client connections routed through the affected mongos instance.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18697 is a denial of service vulnerability in MongoDB Server's aggregation framework. An unauthenticated attacker can submit a specially formed aggregation command to a mongos (router) process, causing it to terminate unexpectedly. This disrupts client connections that rely on the affected mongos instance. The vulnerability is identified as CWE-617 (Reachable Assertion). No information about affected versions or patches is provided in the available data.
Potential Impact
The impact is a denial of service (DoS) condition affecting the mongos router process in MongoDB Server. This can disrupt client connections routed through the affected mongos, potentially causing service interruptions. There is no indication of confidentiality or integrity impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided. Until a patch is available, consider limiting exposure of mongos endpoints to untrusted networks to reduce risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-wxp5-7rcf-9m3q
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-18697"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a7c9b72bf8831d539ce06b3
Added to database: 08/12/2026, 16:12:34 UTC
Last enriched: 08/12/2026, 17:27:41 UTC
Last updated: 08/13/2026, 02:41:00 UTC
Views: 3
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