CVE-2026-96297Hinoki check available

Memory disclosure via aggregation use-after-free

Published Oct 13, 2026 · Updated Oct 13, 2026

Use-after-free in MongoDB Server aggregation allows remote authenticated users to read unrelated process data via crafted queries. An internal aggregation stage combined with a zero batch size reads released memory and returns unrelated data when that memory has been reused. The supplied record requires read privileges and also identifies server crashes; public corroboration for this CVE was not located.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in MongoDB Server aggregation allows remote authenticated users to read unrelated process data via crafted queries. An internal aggregation stage combined with a zero batch size reads released memory and returns unrelated data when that memory has been reused. The supplied record requires read privileges and also identifies server crashes; public corroboration for this CVE was not located.

The record

CVE
CVE-2026-96297
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
MongoDB
Product
MongoDB Server
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0 <7.0.45
  2. Affected versionversion=8.0 <8.0.34
  3. Affected versionversion=8.3.0 <8.3.13
  4. Affected versionversion=9.0 <9.0.2

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

MongoDB · MongoDB Serverversion=7.0 <7.0.45; version=8.0 <8.0.34; version=8.3.0 <8.3.13; version=9.0 <9.0.2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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