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CVE-2026-76825

8.4 · HIGH

RestrictedPython is a tool that helps define a subset of the Python language for accepting program input in a trusted environment.

Published Sep 16, 2026CWE-200EPSS 0.62%

Overview

CVE-2026-76825 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

RestrictedPython is a tool that helps define a subset of the Python language for accepting program input in a trusted environment. Prior to 8.4, RestrictedPython could allow a sandbox escape when a custom import policy or globals exposed the standard library string module, the string.Formatter class, a Formatter instance, or a Formatter subclass to restricted code. The string.Formatter methods format, get_field, get_value, and vformat performed attribute and item traversal internally without passing through RestrictedPython's safer_getattr protections. Restricted code could use those live object references to reach function globals, builtins, file access, or code execution primitives, affecting confidentiality, integrity, and availability in the host environment. This issue is fixed in version 8.4.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/zopefoundation/RestrictedPython/commit/3b47440070b91f8807c2b2998aca99e94783639aGitHubgithub.com/zopefoundation/RestrictedPython/releases/tag/8.4GitHubgithub.com/zopefoundation/RestrictedPython/security/advisories/GHSA-hp3v-5vw7-fx9w

How CyberStrike helps

Frequently asked questions

What is CVE-2026-76825?

CVE-2026-76825 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-76825?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-76825?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-76825?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-76825 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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