PT-2025-40458 · Anthropic · Claude-Code

Avivdon · Published 2025-10-03 · Updated 2026-03-31 · CVE-2025-59536

Positive Technologies · (AI Summary)

CVSS v3.1

8.8

High

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Claude Code versions prior to 1.0.111

Description Claude Code, an agentic coding tool, had a flaw in its startup trust dialog implementation. This allowed the tool to execute code from a project before the user confirmed the trust dialog. To exploit this, a user needed to launch Claude Code within an untrusted directory. Real-world incidents included the theft of a Gemini API key resulting in a loss of $82,000 within 48 hours, and the exfiltration of credentials via a Claude Code MCP configuration. The issue was addressed in version 1.0.111. Exploitation involved malicious configurations, specifically within .claude/settings.json files, utilizing command hooks to execute code upon cloning a repository. The vulnerability could lead to Remote Code Execution (RCE) and API token theft.

Recommendations Update Claude Code to version 1.0.111 or later.

Exploit

Fix

RCE

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2025-59536

GHSA-4FGQ-FPQ9-MR3G

Affected Products

Claude-Code

References · 55

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59536.json · Exploit
• https://github.com/anthropics/claude-code/security/advisories/GHSA-4fgq-fpq9-mr3g · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-59536 · Security Note
• https://osv.dev/vulnerability/CVE-2025-59536 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-4fgq-fpq9-mr3g · Vendor Advisory
• https://github.com/anthropics/claude-code · Note
• https://twitter.com/Cyber_O51NT/status/2026830411993694467 · Twitter Post
• https://twitter.com/CveFindCom/status/1974009063676539356 · Twitter Post
• https://twitter.com/blackorbird/status/2027016112668565798 · Twitter Post
• https://twitter.com/TechNadu/status/2027783543204565334 · Twitter Post
• https://twitter.com/threatcluster/status/2026824663142195703 · Twitter Post
• https://reddit.com/r/CVEWatch/comments/1rhuktk/top_10_trending_cves_01032026 · Reddit Post
• https://twitter.com/airblackbox/status/2039088160043577379 · Twitter Post
• https://twitter.com/RealityPrimero/status/2027516547196195044 · Twitter Post
• https://twitter.com/AISecHub/status/2026968582677020898 · Twitter Post