How severe is CVE-2023-40185?

CVE-2023-40185 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-40185 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40185?

CVE-2023-40185 affects Shescape Project Shescape. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40185?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-40185 published?

CVE-2023-40185 was published on 2023-08-23 and last updated on 2026-06-17.

CVE-2023-40185

CVE-2023-40185 is a medium-severity vulnerability in Shescape Project Shescape with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-150.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-150
Affected product: Shescape Project Shescape
Published: 2023-08-23
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-40185?: 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.
How severe is CVE-2023-40185?: CVE-2023-40185 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-40185 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40185?: CVE-2023-40185 affects Shescape Project Shescape. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40185?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-40185 published?: CVE-2023-40185 was published on 2023-08-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:shescape_project:shescape:*:*:*:*:*:node.js:*:*

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