CVE-2025-55284

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

Description

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.

Category

7.1
CVSS
Severity: High
CVSS 4.0 •
EPSS 0.05%
Affected: anthropics claude-code
Published at:
Updated at:

References

Link Tags
https://github.com/anthropics/claude-code/security/advisories/GHSA-x5gv-jw7f-j6xj

Frequently Asked Questions

What is the severity of CVE-2025-55284?
CVE-2025-55284 has been scored as a high severity vulnerability.
How to fix CVE-2025-55284?
To fix CVE-2025-55284, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-55284 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-55284 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-55284?
CVE-2025-55284 affects anthropics claude-code.
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