perspective-dev Perspective up to 5.0.0 PolarsVirtualServer eval code injection

Summaryinfo

A vulnerability was found in perspective-dev Perspective up to 5.0.0. It has been declared as critical. The impacted element is the function eval of the component PolarsVirtualServer. Such manipulation leads to code injection. This vulnerability is uniquely identified as CVE-2026-67195. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in perspective-dev Perspective up to 5.0.0. Affected by this issue is the function eval of the component PolarsVirtualServer. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at christbowel.com. This vulnerability is handled as CVE-2026-67195 since 07/28/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/04/2026). The MITRE ATT&CK project declares the attack technique as T1059.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Vendor

• perspective-dev

Name

• Perspective

Version

• 5.0

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• 🔒

CPE 2.2info

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