Authenticated denial of service via dotted attribute paths
Published May 25, 2025 · Updated May 28, 2025
Class pollution in MultiModalDataset.getitem in DocArray 0.40.0 through 0.40.1 allows remote authenticated users to halt web APIs. The method splits an attacker-controlled preprocessing field into attributes, follows them with getattr, and writes the final attribute with setattr without blocking Python internal class paths. Exploitation requires an application to expose preprocessing paths through a network API; overwriting ModelMetaclass.subclasscheck makes Pydantic-dependent requests fail until the Python process restarts.
Summary
What happened
Class pollution in MultiModalDataset.getitem in DocArray 0.40.0 through 0.40.1 allows remote authenticated users to halt web APIs. The method splits an attacker-controlled preprocessing field into attributes, follows them with getattr, and writes the final attribute with setattr without blocking Python internal class paths. Exploitation requires an application to expose preprocessing paths through a network API; overwriting ModelMetaclass.subclasscheck makes Pydantic-dependent requests fail until the Python process restarts.
The record
- CVE
- CVE-2025-5150
- Published
- May 25, 2025
- Updated
- May 28, 2025
- Vendor
- LF AI & Data Foundation
- Product
- DocArray
- Classifications
- CWE-94, CWE-1321, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 25, 2025CVE publishedPublication date reported by the CVE source.
- May 28, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.40.0
- Affected versionversion=0.40.1
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
- DocArray MultiModalDataset class-pollution proof of conceptproof of concept · demonstrated
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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