What is the CVSS score of CVE-2026-73411?

CVE-2026-73411 has a CVSS 4.0 base score of 6.3 (Medium). CVSS vector: 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. EPSS exploitation probability: 0.3%.

Is there a patch available for CVE-2026-73411?

Yes, a patch is available for CVE-2026-73411. Update the affected software to the latest version immediately.

Shescape CVE-2026-73411

EUVD-2026-57518 MEDIUM

Improper Encoding or Escaping of Output (CWE-116)

2026-08-12 GitHub_M

GHSA-q53c-4prm-w95q

Information Disclosure Shescape Ericcornelissen

6.3

CVSS 4.0 · Vendor: GitHub_M

View

Vulnerability Assessment

Weakness

CWE

CWE-116

OWASP Top 10:2025

A05:2025 - Injection

ASVS 5.0

V1 - Encoding and Sanitization Output encoding for downstream

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 12, 2026

Incomplete tilde-escaping in Shescape's Dash shell mode allows attacker-controlled input to bypass sanitization and trigger home-directory expansion. Shescape versions prior to 2.1.14 (v2 branch) and 3.0.1 (v3 branch) on Unix systems fail to escape ~ when it follows : or =, characters that Dash recognizes as tilde-expansion triggers in assignment contexts. An attacker supplying values such as :~ can disclose the server process's home-directory path and potentially redirect the filesystem location on which the downstream command operates. No public exploit identified at time of analysis, though a functional proof-of-concept is documented in the vendor's security advisory GHSA-q53c-4prm-w95q.

Affected VersionsENISA

shescape < 2.1.14

shescape 3.0.0, < 3.0.1

Affected Packages

npm shescape fix: 2.1.14, 3.0.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (GitHub_M) PRIMARY 6.3 MEDIUM

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

Primary rating from Vendor (GitHub_M) · only source for this CVE.

CVSS VectorVendor: GitHub_M

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

Present

Privileges Required

None

User Interaction

None

Vulnerable system: Confidentiality

Low

Vulnerable system: Integrity

Low

Vulnerable system: Availability

None

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

Patch available

Aug 12, 2026 - 22:03 EUVD

DescriptionCVE.org

Shescape 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.

Threat Intelligence Overview

EPSS Score

0.3%

Top 74% exploitable

Threat Intel

1 sources

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS

Vulnrichment GHSA

GitHub

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.3%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation

None

System Exposure· derived

Open

Automatable

Human Impact· derived

Medium

Technical Impact

Partial

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +32

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.