CVE-2025-30222

Public Exploit
Shescape has potential environment variable exposure on Windows with CMD

Description

Shescape is a simple shell escape library for JavaScript. Versions 1.7.2 through 2.1.1 are vulnerable to potential environment variable exposure on Windows with CMD. This impact users of Shescape on Windows that explicitly configure `shell: 'cmd.exe'` or `shell: true` using any of `quote`/`quoteAll`/`escape`/`escapeAll`. An attacker may be able to get read-only access to environment variables. This bug has been patched in v2.1.2. For those who are already using v2 of Shescape, no further changes are required. Those who are are using v1 of Shescape should follow the migration guide to upgrade to v2. There is no plan to release a patch compatible with v1 of Shescape. As a workaround, users can remove all instances of `%` from user input before using Shescape.

Category

2.1
CVSS
Severity: Low
CVSS 4.0 •
EPSS 0.02%
Affected: ericcornelissen shescape
Published at:
Updated at:

References

Link Tags
https://github.com/ericcornelissen/shescape/security/advisories/GHSA-66pp-5p9w-q87j
https://github.com/ericcornelissen/shescape/pull/1916
https://github.com/ericcornelissen/shescape/commit/0a81f1eb077bab8caae283a2490cd7be9af179c6
https://github.com/ericcornelissen/shescape/releases/tag/v2.1.2

Frequently Asked Questions

What is the severity of CVE-2025-30222?
CVE-2025-30222 has been scored as a low severity vulnerability.
How to fix CVE-2025-30222?
To fix CVE-2025-30222, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-30222 being actively exploited in the wild?
It is possible that CVE-2025-30222 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-30222?
CVE-2025-30222 affects ericcornelissen shescape.
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