What’s Vulnerable › Vulnerabilities

CVE-2023-35931: Shescape potential environment variable exposure on Windows with CMD

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-06-23 · updated 2026-06-17
• Weakness: CWE-526

Description

Shescape is a simple shell escape library for JavaScript. An attacker may be able to get read-only access to environment variables. This bug has been patched in version 1.7.1.

Affected products

• ericcornelissen shescape: before 1.7.1 — fixed in 1.7.1

How to fix

Upgrade to a fixed version: ericcornelissen shescape 1.7.1. Check the vendor advisory for mitigations.

References

• https://github.com/ericcornelissen/shescape/commit/d0fce70f987ac0d8331f93cb45d47e79436173ac
• https://github.com/ericcornelissen/shescape/pull/982
• https://github.com/ericcornelissen/shescape/releases/tag/v1.7.1
• https://github.com/ericcornelissen/shescape/security/advisories/GHSA-3g7p-8qhx-mc8r
• https://github.com/ericcornelissen/shescape/commit/d0fce70f987ac0d8331f93cb45d47e79436173ac
• https://github.com/ericcornelissen/shescape/pull/982
• https://github.com/ericcornelissen/shescape/releases/tag/v1.7.1
• https://github.com/ericcornelissen/shescape/security/advisories/GHSA-3g7p-8qhx-mc8r

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