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CVE-2023-35931

Shescape potential environment variable exposure on Windows with CMD

MEDIUM
4.3
CVSS Score
Published: June 23, 2023 at 07:32 PM UTC
Updated: June 17, 2026 at 06:05 AM UTC
2 products affected across 2 vendorsShescapeProject Shescape

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Shescape· Shescape Projectnpm
95%
v < 1.7.1
Affected range stops below 1.7.1, so it looks safe — our inference, not a vendor statement
Project Shescape· Ericcornelissennpm
60%
v < 1.7.1
Affected range stops below 1.7.1, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/ericcornelissen/shescape/commit/d0fce70f987ac0d8331f93cb45d47e79436173ac
x_refsource_MISCPatch
Source: [email protected]
https://github.com/ericcornelissen/shescape/pull/982
x_refsource_MISCRelease Notes
Source: [email protected]
https://github.com/ericcornelissen/shescape/releases/tag/v1.7.1
x_refsource_CONFIRMExploitVendor Advisory
Source: [email protected]
https://github.com/ericcornelissen/shescape/security/advisories/GHSA-3g7p-8qhx-mc8r

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-526

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