What is the CVSS score of CVE-2026-25724?

CVE-2026-25724 has a CVSS 4.0 base score of 2.3 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-25724?

Within 24 hours: Identify all Claude Code deployments and document current versions in use. Within 7 days: Implement network segmentation to restrict Claude Code access to non-sensitive file systems; disable Claude Code symbolic link functionality if available in settings. Within 30 days: Monitor vendor communications for patch availability (CVE-2026-25724); prepare upgrade plan and testing procedures for deployment of version 2.1.7 or later when released.

Claude Code CVE-2026-25724

LOW

UNIX Symbolic Link (Symlink) Following (CWE-61)

2026-02-06 security-advisories@github.com

GHSA-4q92-rfm6-2cqx

Information Disclosure Claude Code Anthropic

2.3

CVSS 4.0 · GitHub Advisory

View

Vulnerability Assessment

Weakness	CWE CWE-61 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V5 - File Handling UNIX symlink resolution
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Claude Code versions prior to 2.1.7 allow unauthorized file access by bypassing deny rules through symbolic link traversal, enabling attackers to read restricted files that administrators explicitly blocked. An attacker with access to the system can exploit this vulnerability to access sensitive files like /etc/passwd by leveraging symlinks that point to denied resources. This vulnerability affects AI/ML tools using Claude Code and currently has no available patch.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 2.3

RemediationAI

Fixed in version 2.1.7.. Restrict network access to the affected service where possible.

Affected Packages

npm @anthropic-ai/claude-code fix: 2.1.7

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Affects Claude Code. Claude Code is an agentic coding tool. Prior to version 2.1.7, Claude Code failed to strictly enforce deny rules configured in settings.json when accessing files through symbolic links. If a user explicitly denied Claude Code access to a file (such as /etc/passwd) and Claude Code had access to a symbolic link pointing to that file, it was possible for Claude Code to read the restricted file through the symlink without triggering deny rule enforcement. This issue has been patched in version 2.1.7

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 2.3 LOW

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

Present

Privileges Required

None

User Interaction

Passive

Vulnerable system: Confidentiality

Low

Vulnerable system: Integrity

Low

Vulnerable system: Availability

Low

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

CVE Published

Feb 06, 2026 - 18:16 nvd

LOW 2.3

DescriptionGitHub Advisory

Claude Code is an agentic coding tool. Prior to version 2.1.7, Claude Code failed to strictly enforce deny rules configured in settings.json when accessing files through symbolic links. If a user explicitly denied Claude Code access to a file (such as /etc/passwd) and Claude Code had access to a symbolic link pointing to that file, it was possible for Claude Code to read the restricted file through the symlink without triggering deny rule enforcement. This issue has been patched in version 2.1.7.

Executive ViewAI

Why It Matters

Claude Code versions prior to 2.1.7 contain a vulnerability that allows unauthorized file access by bypassing security restrictions through symbolic links, potentially exposing sensitive data and intellectual property. Organizations using Claude Code for development are at risk of unauthorized access to files that should be protected by configured deny rules.

Business Impact: High

Compensating Controls

Restrict Claude Code to isolated environments with minimal file system access; implement filesystem-level access controls and SELinux/AppArmor policies to prevent symbolic link traversal; disable symbolic link support in Claude Code configuration if available; monitor file access logs for suspicious activity; segment development systems from production and sensitive data repositories; implement network-based access controls limiting Claude Code connectivity.

Threat Intelligence Overview

EPSS Score

0.1%

Top 80% exploitable

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS

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 LOW

CISA KEV No

Public POC No

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

LOW severity (CVSS 0.1-3.9)

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· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +12

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.