Object prototype modification via inherited path traversal
Published Jan 22, 2024 · Updated Jun 17, 2025
Prototype pollution in Elijah Harry hoolock 2.0.0 through 2.2.0 allows attackers to alter prototypes via object-path utilities. The get, set, and update functions traverse inherited object-path properties without rejecting prototype-chain segments, enabling reads or writes through an object's prototype. Exploitation requires a consuming application to pass attacker-controlled paths, and the consequence depends on how that application uses polluted properties.
Summary
What happened
Prototype pollution in Elijah Harry hoolock 2.0.0 through 2.2.0 allows attackers to alter prototypes via object-path utilities. The get, set, and update functions traverse inherited object-path properties without rejecting prototype-chain segments, enabling reads or writes through an object's prototype. Exploitation requires a consuming application to pass attacker-controlled paths, and the consequence depends on how that application uses polluted properties.
The record
- CVE
- CVE-2024-23339
- Published
- Jan 22, 2024
- Updated
- Jun 17, 2025
- Vendor
- Elijah Harry
- Product
- hoolock
- Classifications
- CWE-1321
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 22, 2024CVE publishedPublication date reported by the CVE source.
- Jun 17, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=>= 2.0.0, < 2.2.1
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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