Shescape: Path disclosure on Unix with Zsh

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-73412
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-12 20:17:56 UTC
Updated2026-08-12 20:17:56 UTC
DescriptionShescape is a simple shell escape library for JavaScript. Prior to 2.1.14 and 3.0.1, this impacts users of Shescape on Unix systems that explicitly configure shell to Zsh, or true when the default shell is Zsh, using the escape and escapeAll. The Zsh options EXTENDED_GLOB and MAGIC_EQUAL_SUBST exacerbate the problem. In certain case, an attacker can leverage home directory expansion and extended glob syntax to obtain lists of files and directories on the system. Depending on what the command does, this may be used to leak more information. This issue is fixed in versions 2.1.14 and 3.0.1.

Risk And Classification

Primary CVSS: v4.0 6.3 MEDIUM from [email protected]

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-78 | CWE-155 | CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | CWE-155 CWE-155: Improper Neutralization of Wildcards or Matching Symbols

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary6.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED6.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ericcornelissen Shescape affected < 2.1.14 Not specified
CNA Ericcornelissen Shescape affected >= 3.0.0, < 3.0.1 Not specified

References

ReferenceSourceLinkTags
github.com/ericcornelissen/shescape/security/advisories/GHSA-6v4m-fw66-8r4x [email protected] github.com
github.com/ericcornelissen/shescape/pull/2651 [email protected] github.com
github.com/ericcornelissen/shescape/releases/tag/v3.0.1 [email protected] github.com
github.com/ericcornelissen/shescape/pull/2649 [email protected] github.com
github.com/ericcornelissen/shescape/commit/b4b34c394e7f9da2775bb75381066... [email protected] github.com
github.com/ericcornelissen/shescape/commit/43d70b59d09bbe5c3fd02ef08b3a1... [email protected] github.com
github.com/ericcornelissen/shescape/releases/tag/v2.1.14 [email protected] github.com
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