CVE-2024-38991Public exploitNetwork attack vector

Code execution and service interruption via prototype pollution

Published Jul 1, 2024 · Updated Aug 2, 2024

Prototype pollution in @akbr/patch-into 1.0.1 allows remote authenticated users to corrupt object prototypes through crafted patch paths. The patchInto function accepts a path containing proto and assigns an attacker-controlled value through that path, modifying Object.prototype for subsequently created objects. A consuming application must pass user-controlled paths into the library; resulting denial of service or code execution depends on an application-specific gadget.

CVSS severity8.8
High
EPSS probability0.82%
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 @akbr/patch-into 1.0.1 allows remote authenticated users to corrupt object prototypes through crafted patch paths. The patchInto function accepts a path containing proto and assigns an attacker-controlled value through that path, modifying Object.prototype for subsequently created objects. A consuming application must pass user-controlled paths into the library; resulting denial of service or code execution depends on an application-specific gadget.

The record

CVE
CVE-2024-38991
Published
Jul 1, 2024
Updated
Aug 2, 2024
Vendor
akbr
Product
@akbr/patch-into
Classifications
CWE-1321
Attack vector
network
Privileges
authenticated

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?

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

  1. Affected versionversion=1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

akbr · @akbr/patch-intoversion=1.0.1

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
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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