Arbitrary file read via broad Deno permissions
Published Nov 4, 2025 · Updated Nov 4, 2025
Arbitrary file read in DSPy 3.0.3 and earlier allows attackers to steal host files through untrusted PythonInterpreter code. PythonInterpreter launches Deno with overly broad read permission, letting sandboxed Pyodide code fetch file URLs outside intended paths. Exposure requires an application to pass attacker-controlled input into an AI agent that executes it with PythonInterpreter; the demonstrated consequence is host-file disclosure.
Summary
What happened
Arbitrary file read in DSPy 3.0.3 and earlier allows attackers to steal host files through untrusted PythonInterpreter code. PythonInterpreter launches Deno with overly broad read permission, letting sandboxed Pyodide code fetch file URLs outside intended paths. Exposure requires an application to pass attacker-controlled input into an AI agent that executes it with PythonInterpreter; the demonstrated consequence is host-file disclosure.
The record
- CVE
- CVE-2025-12695
- Published
- Nov 4, 2025
- Updated
- Nov 4, 2025
- Vendor
- Stanford NLP Group
- Product
- DSPy
- Classifications
- CWE-653, T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 4, 2025CVE publishedPublication date reported by the CVE source.
- Nov 4, 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=0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- JFrog PythonInterpreter file-read proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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