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Vulnerabilities ›

CVE-2026-21852

High

Claude Code is an agentic coding tool. Prior to version 2.0.65, vulnerability in Claude Code's project-load flow allowed malicious repositories to exfiltrate data including Anthropic API keys before u

CWE-522 — Weakness Type

                    Published: Jan 21, 2026                      ·  Modified: Feb 28, 2026                      ·  Source: NVD                

CVSS v3

7.5

🔗 NVD Official

📄 Description (English)

Claude Code is an agentic coding tool. Prior to version 2.0.65, vulnerability in Claude Code's project-load flow allowed malicious repositories to exfiltrate data including Anthropic API keys before users confirmed trust. An attacker-controlled repository could include a settings file that sets ANTHROPIC_BASE_URL to an attacker-controlled endpoint and when the repository was opened, Claude Code would read the configuration and immediately issue API requests before showing the trust prompt, potentially leaking the user's API keys. Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to version 2.0.65, which contains a patch, or to the latest version.

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Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 1

https://github.com/anthropics/claude-code/security/advisories/GHSA-jh7p-qr78-84p7

security-advisories@github.com

Vendor Advisory

📦 Affected Products / CPE 1 entries

anthropic:claude_code

📊 CVSS Score

7.5

/ 10.0 — High

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityH — High

IntegrityN — None / Network

AvailabilityN — None / Network

📋 Quick Facts

Severity High

CVSS Score7.5

CWECWE-522

EPSS0.05%

Exploit No

Patch ✓ Yes

Published 2026-01-21

Source Feed nvd

Views 1

🏷️ Tags

CWE-522

🏢 Vendor Advisories

🔗 https://github.com/anthropics/claude-code/security/a...

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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