CVE-2024-39012Public exploitNetwork attack vector

Code execution via unchecked prototype property merge

Published Jul 30, 2024 · Updated Oct 22, 2024

Prototype pollution in ais-ltd strategyen 0.4.0 allows attackers to alter inherited object properties through crafted state data. The helpers.restoreState function accepts an object containing proto and passes its properties into mergeObjects without rejecting prototype keys, modifying Object.prototype. Reachability requires an application to pass attacker-controlled state into the library; resulting property corruption can crash the service or enable code execution when a suitable gadget exists.

CVSS severity9.8
Critical
EPSS probability0.97%
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 ais-ltd strategyen 0.4.0 allows attackers to alter inherited object properties through crafted state data. The helpers.restoreState function accepts an object containing proto and passes its properties into mergeObjects without rejecting prototype keys, modifying Object.prototype. Reachability requires an application to pass attacker-controlled state into the library; resulting property corruption can crash the service or enable code execution when a suitable gadget exists.

The record

CVE
CVE-2024-39012
Published
Jul 30, 2024
Updated
Oct 22, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1321
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 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

9.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/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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