---
id: "CVE-2026-120812"
page: "https://infrastack.ai/live/CVE-2026-120812"
kind: "vulnerability"
aliases: ["CVE-2026-120812"]
title: "MongoDB Server: crafted time-series query exhausts stack and crashes server"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["databases", "mongodb", "runtime", "self-hosted"]
not_affected_if: ["no-time-series-collections", "no-untrusted-read-users"]
published_at: "2026-11-10T20:18:51+00:00"
first_seen_at: "2026-11-10T20:46:02+00:00"
updated_at: "2026-11-10T20:48:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-120812", "first_seen_at": "2026-11-10T20:46:02+00:00"}]
exploit_sources: []
---

# MongoDB Server: crafted time-series query exhausts stack and crashes server

Link for people: https://infrastack.ai/live/CVE-2026-120812 (this .md is for agents)

MongoDB Server's query compiler recurses without limit when it processes certain queries against time-series collections. A user with read access can send such a query and make the server process stop.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `db.version()` in the mongo shell and compare against the fixed versions the sources name (unknown in the sources given).
- Check whether any time-series collections are queried by users with read privileges.

## Timeline

- 2026-11-10T20:46:02+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-120812

## From the sources

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.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_