Information Exposure Affecting shescape package, versions >=1.7.2 <2.1.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-SHESCAPE-9515254
- published26 Mar 2025
- disclosed25 Mar 2025
- creditUnknown
Introduced: 25 Mar 2025
NewCVE-2025-30222 (opens in a new tab)How to fix?
Upgrade shescape to version 2.1.2 or higher.
Overview
shescape is a simple shell escape library
Affected versions of this package are vulnerable to Information Exposure due to the configuration of shell parameter. An attacker can gain read-only access to environment variables by manipulating input parameters such as quote, quoteAll, escape, or escapeAll.
Note: This is only exploitable if the attacker is a user of Shescape on Windows that explicitly configures shell: cmd.exe or shell: true using any of quote/quoteAll/escape/escapeAll.
Workaround
This vulnerability can be mitigated by removing all instances of % from user input before using Shescape.