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CVE-2025-59536

56
FAUCET Score

CVE-2025-59536 is a high-severity code injection vulnerability (CWE-94) affecting Anthropic Claude Code versions prior to 1.0.111. This flaw allows an attacker to execute arbitrary code from a malicious project before a user accepts the startup trust dialog, provided the user starts Claude Code in an untrusted directory. The vulnerability carries a CVSS score of 8.8 (HIGH), indicating a network-based attack with low complexity, requiring user interaction, and leading to high impacts on confidentiality, integrity, and availability. While not currently in CISA's KEV catalog, its FAUCET Risk Score is 83/100. There is no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not actively exploited. However, the vulnerability has garnered significant community discussion (11 mentions) and media coverage, highlighting its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.111CPE matchmatch criteria
cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 4.0

8.7HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
33.17%
Probability of exploitation in next 30 days
EPSS Percentile
98.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3317 is in the 99th percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: @anthropic-ai/claude-codeFixed in: 1.0.111
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-4fgq-fpq9-mr3ghigh

Claude Code can execute commands prior to the startup trust dialog

Oct 3, 2025

References

github.com / anthropics/claude-code/security/advisories/GHSA-4fgq-fpq9-mr3g
Vendor Advisory