Malicious pickle bypass via extension-based scan routing
Published Sep 17, 2025 · Updated Sep 17, 2025
Improper input validation in Matthieu Maitre picklescan 0.0.30 and earlier allows attackers to bypass malicious-pickle detection. The scan_bytes function routes PyTorch-related extensions to scan_pytorch and returns its parsing error without falling back to scan_pickle_bytes. Exploitation requires an attacker-controlled file to be scanned under a misleading extension and later loaded, at which point its pickle payload executes code.
Summary
What happened
Improper input validation in Matthieu Maitre picklescan 0.0.30 and earlier allows attackers to bypass malicious-pickle detection. The scan_bytes function routes PyTorch-related extensions to scan_pytorch and returns its parsing error without falling back to scan_pickle_bytes. Exploitation requires an attacker-controlled file to be scanned under a misleading extension and later loaded, at which point its pickle payload executes code.
The record
- CVE
- CVE-2025-10155
- Published
- Sep 17, 2025
- Updated
- Sep 17, 2025
- Vendor
- Matthieu Maitre
- Product
- picklescan
- Classifications
- CWE-20, CWE-693, T1036
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 17, 2025CVE publishedPublication date reported by the CVE source.
- Sep 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=0.0.30 changes=[{"at":"0.0.31","status":"unaffected"}]
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
- GHSA-jgw4-cr84-mqxg extension-mismatch proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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