GCD AI RADAR
incidents/AIR-2025-0325

CVE-2025-55284: Claude Code Allowlist Bypass Enables Unauthorized File Read

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerabilityPrompt injection

An overly broad command allowlist in Claude Code permitted confirmation prompt bypasses to read and exfiltrate files over the network. Users received automatic fixes via updates or forced version upgrades.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

Details

type
Attack on AI
An AI model, agent or AI-powered product was the thing exploited, abused or leaked.
categories
  • Infrastructure vulnerabilityprimary
    CVEs and advisories in AI frameworks, inference servers, MCP servers, AI developer tools and hosting stacks.
  • Prompt injection
    Untrusted content (web pages, documents, emails, tool output) steers a model into ignoring its instructions.
owasp llm top 10
mitre atlas
Both rows are derived from the type and categories (OWASP 2025 edition, ATLAS release 2026.09), not classified per record. How
severity
2 · Disclosed vulnerability
CVE or vendor advisory, patched or patchable, no confirmed exploitation.
targets
Anthropic, Framework / tooling
products
Claude Code
incident date
18 Aug 2025
first reported
16 Aug 2025
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
classifier confidence
0.95 · published at or above 0.80; see the methodology
tags
CVE-2025-55284 · allowlist-bypass
record
created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z · json

Sources · 2

  1. 2025-08-16
    CVE-2025-55284: Claude Code is an agentic coding tool.
    NVD · nvd.nist.gov/vuln/detail/CVE-2025-55284
  2. 2025-08-18
    CVE-2025-55284: Claude Code's Permissive Default Allowlist Enables Unauthorized File Read and Network Exfiltration in Claude Code
    GitHub Advisory Database · github.com/advisories/GHSA-x5gv-jw7f-j6xj

Titles and links belong to their publishers. The summary above is written by GCD AI RADAR in its own words; data is CC BY-SA 4.0.

Related incidents