CVE-2024-39016Public exploitNetwork attack vector

Code execution via prototype-polluting object assignment

Published Jul 1, 2024 · Updated Aug 2, 2024

Prototype pollution in @c3/utils-1 1.0.131 allows remote attackers to execute code or interrupt service via crafted object keys. The assign and set helpers accept proto in object or path input and write attacker-chosen properties onto Object.prototype. No authentication is required, but code execution or a crash depends on a suitable application gadget that consumes a polluted property.

CVSS severity8.1
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Prototype pollution in @c3/utils-1 1.0.131 allows remote attackers to execute code or interrupt service via crafted object keys. The assign and set helpers accept proto in object or path input and write attacker-chosen properties onto Object.prototype. No authentication is required, but code execution or a crash depends on a suitable application gadget that consumes a polluted property.

The record

CVE
CVE-2024-39016
Published
Jul 1, 2024
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1321
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Public exploit references

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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