CVE-2023-50709Network attack vector

API crash via unhandled asynchronous request errors

Published Dec 13, 2023 · Updated Oct 8, 2024

Improper input validation in Cube Core before 0.34.34 allows remote authenticated users to crash the Cube API with a crafted request. API gateway asynchronous handlers did not forward rejected promises to the global Express error middleware, leaving request-triggered errors unhandled. A low-privileged API credential and a request that triggers an asynchronous handler rejection are sufficient to interrupt the entire API service.

CVSS severity6.5
Medium
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Cube Core before 0.34.34 allows remote authenticated users to crash the Cube API with a crafted request. API gateway asynchronous handlers did not forward rejected promises to the global Express error middleware, leaving request-triggered errors unhandled. A low-privileged API credential and a request that triggers an asynchronous handler rejection are sufficient to interrupt the entire API service.

The record

CVE
CVE-2023-50709
Published
Dec 13, 2023
Updated
Oct 8, 2024
Vendor
Cube Dev
Product
Cube Core
Classifications
CWE-20, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 2024Record 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=< 0.34.34

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cube Dev · Cube Coreversion=< 0.34.34

Published CVSS scores

7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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-20Improper Input Validation
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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