// For flags

CVE-2025-55284

Claude Code's Permissive Default Allowlist Enables Unauthorized File Read and Network Exfiltration in Claude Code

Severity Score

7.1
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Claude Code is an agentic coding tool. Prior to version 1.0.4, it's possible to bypass the Claude Code confirmation prompts to read a file and then send file contents over the network without user confirmation due to an overly broad allowlist of safe commands. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. Users on standard Claude Code auto-update received this fix automatically after release. Current users of Claude Code are unaffected, as versions prior to 1.0.24 are deprecated and have been forced to update.

Claude Code es una herramienta de codificación agentica. Antes de la versión 1.0.4, era posible omitir las solicitudes de confirmación de Claude Code para leer un archivo y luego enviar su contenido por la red sin la confirmación del usuario debido a una lista de comandos seguros demasiado amplia. Para explotar esto de forma fiable, es necesario poder añadir contenido no confiable a una ventana de contexto de Claude Code. Los usuarios con la actualización automática estándar de Claude Code recibieron esta corrección automáticamente tras el lanzamiento. Los usuarios actuales de Claude Code no se ven afectados, ya que las versiones anteriores a la 1.0.24 están obsoletas y se han visto obligados a actualizar.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
System
Vulnerable | Subsequent
Confidentiality
High
None
Integrity
None
None
Availability
None
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-08-12 CVE Reserved
  • 2025-08-16 CVE Published
  • 2025-08-18 CVE Updated
  • 2026-05-12 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Anthropics
Search vendor "Anthropics"
 Claude-code
Search vendor "Anthropics" for product "Claude-code"
 < 1.0.4
Search vendor "Anthropics" for product "Claude-code" and version " < 1.0.4"
en
Affected