Shescape: Home-directory disclosure in assignment context on Unix with Dash

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-73411
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-12 20:17:56 UTC
Updated2026-08-12 21:17:40 UTC
DescriptionShescape is a simple shell escape library for JavaScript. Prior to 2.1.14 and 3.0.1, getEscapeFunction in src/internal/unix/dash.js fails to escape ~ after : or = when applications use the escape or escapeAll APIs on Unix with shell set to dash, or with shell set to true when Dash is the default, and interpolate the result into an assignment prefixed to a command. An attacker who controls the input can supply a value such as :~ to disclose the home-directory path and may change the location on which the command operates. 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:L/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-116 | CWE-200 | CWE-116 CWE-116: Improper Encoding or Escaping of Output | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary6.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/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:L/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
Low
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:L/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/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/security/advisories/GHSA-q53c-4prm-w95q [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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