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CVE-2026-73055— Shescape before 2.1.15 and 3.0.2 Home Directory Disclosure via BusyBox

Quick assessment

Affected
ericcornelissen shescape
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ericcornelissen shescape是ericcornelissen个人开发者的一个安全转义shell命令参数的组件。 ericcornelissen shescape 2.1.15之前版本和3.0.0至3.0.2之前版本存在输出处理不当漏洞，该漏洞源于在赋值环境中未能正确转义波浪号字符，可能导致攻击者注入波浪号有效载荷，泄露用户主目录位置，并可能改变命令操作的位置。

CVSS 4.8 · Medium EPSS 0.36% · P27

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 2

VendorProduct Version RangeStatus
ericcornelissen shescape < 2.1.15 affected
3.0.0< 3.0.2 affected
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I. Basic Information for CVE-2026-73055

Vulnerability Information
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Vulnerability Title
Shescape before 2.1.15 and 3.0.2 Home Directory Disclosure via BusyBox
Source: CVE Program / CVE List V5
Vulnerability Description
Shescape before 2.1.15 (and 3.0.0 before 3.0.2) fails to properly escape tilde (~) characters in assignment contexts on Unix systems where the shell is explicitly configured to "sh" or true and /bin/sh points to BusyBox. Using the escape and escapeAll APIs with untrusted input in an assignment prefixed to a command, an attacker can inject a tilde payload to disclose the user's home directory location and, depending on usage, alter the location on which a command operates.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对输出编码和转义不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
ericcornelissen shescape 输出处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ericcornelissen shescape是ericcornelissen个人开发者的一个安全转义shell命令参数的组件。 ericcornelissen shescape 2.1.15之前版本和3.0.0至3.0.2之前版本存在输出处理不当漏洞，该漏洞源于在赋值环境中未能正确转义波浪号字符，可能导致攻击者注入波浪号有效载荷，泄露用户主目录位置，并可能改变命令操作的位置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ericcornelissen shescape 0 ~ 2.1.15 -

II. Public POCs for CVE-2026-73055

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III. Intelligence Information for CVE-2026-73055

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Patches & Fixes for CVE-2026-73055 (2)

Vendor Advisories for CVE-2026-73055 (2)

IV. Related Vulnerabilities

Same product: shescape
Same vendor: ericcornelissen
Same weakness: CWE-116

V. Comments for CVE-2026-73055

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