CVE-2026-82076: mongodb Integer Overflow — Fix

Description

An integer overflow in the query planning component of MongoDB Server can allow an authenticated user with ordinary database-level read/write privileges to bypass an internal resource limit. Submitting a specially crafted query causes the server to consume memory without bound during query planning, and the resulting exhaustion terminates the server process. This may result in a denial of service affecting all databases served by the affected node.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0029

Probability of exploitation

0.22%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-190 Integer Overflow

Affected Products

Vendor	Product	Versions
mongodb	mongodb	7.0.0 — 7.0.41
mongodb	mongodb	8.0.0 — 8.0.30
mongodb	mongodb	8.2.0 — 8.2.13
mongodb	mongodb	8.3.0 — 8.3.9
mongodb	mongodb	All
mongodb	mongodb	All

References

Advisories & Patches

https://jira.mongodb.org/browse/SERVER-128253

Frequently Asked Questions

What is CVE-2026-82076? +

An integer overflow in the query planning component of MongoDB Server can allow an authenticated user with ordinary database-level read/write privileges to bypass an internal resource limit. Submitting a specially crafted query causes the server to consume memory without bound during query planning, and the resulting exhaustion terminates the server process. This may result in a denial of service affecting all databases served by the affected node. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-82076? +

CVE-2026-82076 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0029, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-82076? +

CVE-2026-82076 affects products from mongodb, specifically: mongodb. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-82076? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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