CVE-2026-13073Network attack vector

Authenticated service interruption via aggregation engine inconsistency

Published Jul 22, 2026 · Updated Jul 22, 2026

Reachable assertion in MongoDB Server 8.0 before 8.0.28 allows remote authenticated users to crash mongod via an aggregation command. A specific combination of aggregation options causes internal engine selection to enter an inconsistent state and trip an invariant assertion. Read-only database privileges suffice, and the abnormal termination interrupts all connected clients until mongod is restarted.

CVSS severity5.3
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in MongoDB Server 8.0 before 8.0.28 allows remote authenticated users to crash mongod via an aggregation command. A specific combination of aggregation options causes internal engine selection to enter an inconsistent state and trip an invariant assertion. Read-only database privileges suffice, and the abnormal termination interrupts all connected clients until mongod is restarted.

The record

CVE
CVE-2026-13073
Published
Jul 22, 2026
Updated
Jul 22, 2026
Vendor
MongoDB
Product
MongoDB Server
Classifications
CWE-617, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 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=8.0 <8.0.28

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MongoDB · MongoDB Serverversion=8.0 <8.0.28

Published CVSS scores

5.3MongoDB, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499Endpoint Denial of Service

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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