An issue in MongoDB Server's handling of certain query predicates against time-series collections with a metaField could allow an authenticated user… (CVE-2026-18695)
A vulnerability in MongoDB Server affects the handling of certain query predicates on time-series collections that use a metaField. An authenticated user with write access can trigger a server process termination, causing a denial of service. The issue does not impact confidentiality or integrity but results in service disruption.
AI Analysis
Technical Summary
CVE-2026-18695 describes a denial of service vulnerability in MongoDB Server where specific query predicates against time-series collections with a metaField can cause the server process to terminate unexpectedly. This requires an authenticated user with write privileges to exploit. The vulnerability is classified under CWE-617 (Reachable Assertion) and has a CVSS 3.1 base score of 6.5, indicating a high severity due to the potential for service disruption.
Potential Impact
The vulnerability allows an authenticated user with write access to cause the MongoDB server process to crash, resulting in denial of service. There is no impact on confidentiality or integrity of data. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor vendor communications for updates. In the meantime, restrict write access to trusted users to reduce risk.
An issue in MongoDB Server's handling of certain query predicates against time-series collections with a metaField could allow an authenticated user… (CVE-2026-18695)
Description
A vulnerability in MongoDB Server affects the handling of certain query predicates on time-series collections that use a metaField. An authenticated user with write access can trigger a server process termination, causing a denial of service. The issue does not impact confidentiality or integrity but results in service disruption.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18695 describes a denial of service vulnerability in MongoDB Server where specific query predicates against time-series collections with a metaField can cause the server process to terminate unexpectedly. This requires an authenticated user with write privileges to exploit. The vulnerability is classified under CWE-617 (Reachable Assertion) and has a CVSS 3.1 base score of 6.5, indicating a high severity due to the potential for service disruption.
Potential Impact
The vulnerability allows an authenticated user with write access to cause the MongoDB server process to crash, resulting in denial of service. There is no impact on confidentiality or integrity of data. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor vendor communications for updates. In the meantime, restrict write access to trusted users to reduce risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7xvj-42gq-cx6p
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-18695"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a7c9b72bf8831d539ce06bf
Added to database: 08/12/2026, 16:12:34 UTC
Last enriched: 08/12/2026, 17:28:07 UTC
Last updated: 08/13/2026, 02:41:00 UTC
Views: 2
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