CVE-2026-67195
Received Received - Intake

Remote Code Execution in Perspective 5.0.0

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: VulnCheck

Description
Perspective 5.0.0 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary operating system commands by submitting crafted expression strings to the PolarsVirtualServer backend, which passes client-supplied input directly to Python's eval() with only __builtins__={} cleared. Attackers can exploit Python object attribute traversal through the interpreter's loaded class list to reach subprocess.Popen via a TableValidateExprReq or TableMakeViewReq protobuf message, achieving arbitrary command execution in the Perspective host process.

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Meta Information

Published
2026-08-04
Last Modified
2026-08-04
Generated
2026-08-04
AI Q&A
2026-08-04
EPSS Evaluated
N/A
NVD
CVE-2026-67195
EUVD
EUVD-2026-52692

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
perspective perspective 5.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-95 The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval").

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Executive Summary

Perspective 5.0.0 has a remote code execution (RCE) vulnerability where unauthenticated attackers can run arbitrary OS commands by sending crafted expressions to the PolarsVirtualServer backend. The issue occurs because the backend uses Python's eval() function with minimal input sanitization, allowing attackers to bypass restrictions and execute commands via protobuf messages like TableValidateExprReq or TableMakeViewReq.

Detection Guidance

Detecting this vulnerability requires monitoring for suspicious protobuf messages or eval() calls in Perspective 5.0.0. Check logs for TableValidateExprReq or TableMakeViewReq messages with crafted expression strings. Network traffic analysis may reveal unusual payloads targeting the PolarsVirtualServer backend.

Impact Analysis

This vulnerability allows attackers to execute arbitrary commands on the host system running Perspective 5.0.0. This could lead to full system compromise, data theft, unauthorized access, or disruption of services. Attackers do not need authentication to exploit it, increasing the risk of widespread impact.

Compliance Impact

This RCE vulnerability could lead to unauthorized access or data breaches, violating GDPR's data protection requirements and HIPAA's security rules. Organizations using Perspective 5.0.0 may face compliance violations, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Immediately upgrade Perspective to a patched version beyond 5.0.0. If upgrading is not possible, restrict network access to the PolarsVirtualServer backend and disable protobuf message processing for untrusted sources. Implement input validation to sanitize all expression strings before eval() execution.

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