MongoDB Server Authenticated DoS via Query Recursion (CVE2026120812)
CVE-2026-120812 Published on November 10, 2026
Full server crash via unbounded per-operand recursion in time-series query vectorization
An issue in MongoDB Server's query processing component allows an authenticated user with read privileges to cause a denial of service. Uncontrolled recursion in an internal query compilation component can lead to stack exhaustion and server process termination when processing certain queries against time-series collections.
Vulnerability Analysis
CVE-2026-120812 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a Stack Exhaustion Vulnerability?
The product does not properly control the amount of recursion which takes place, consuming excessive resources, such as allocated memory or the program stack.
CVE-2026-120812 has been classified to as a Stack Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-120812
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Affected Versions
MongoDB Server:- Version 9.0.0 and below 9.0.7 is affected.
- Version 8.3.0 and below 8.3.16 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.