CVE-2023-40185

Name: CVE-2023-40185
Creator: NVD / NIST
Published: 2023-08-23T21:15:09.063+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2023-40185 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. shescape is simple shell escape library for JavaScript. This may impact users that use Shescape on Windows in a threaded context. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

shescape is simple shell escape library for JavaScript. This may impact users that use Shescape on Windows in a threaded context. The vulnerability can result in Shescape escaping (or quoting) for the wrong shell, thus allowing attackers to bypass protections depending on the combination of expected and used shell. This bug has been patched in version 1.7.4.

Metrics

CVSS 3.1

8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

EPSS Probability

0.56%

42.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-150

Affected Software

Vendor	Product	Versions
Shescape Project	Shescape	< 1.7.4

References

https://github.com/ericcornelissen/shescape/commit/0b976dab645abf45ffd85e74a8c6e51ee2f42d63Patch
https://github.com/ericcornelissen/shescape/pull/1142Patch
https://github.com/ericcornelissen/shescape/releases/tag/v1.7.4Release Notes
https://github.com/ericcornelissen/shescape/security/advisories/GHSA-j55r-787p-m549Exploit, Patch, Vendor Advisory
https://github.com/ericcornelissen/shescape/commit/0b976dab645abf45ffd85e74a8c6e51ee2f42d63Patch
https://github.com/ericcornelissen/shescape/pull/1142Patch
https://github.com/ericcornelissen/shescape/releases/tag/v1.7.4Release Notes
https://github.com/ericcornelissen/shescape/security/advisories/GHSA-j55r-787p-m549Exploit, Patch, Vendor Advisory

Timeline

Published: Aug 23, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40185?

How severe is CVE-2023-40185?

CVE-2023-40185 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40185?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-40185?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST