gcdRadar
archive/Patch now/AIR-2026-0219
closedclosed 30 Sep 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-103012: Claude Code API Key Precedence Policy Bypass

Claude Code

Claude Code incorrectly prioritized stored personal API keys over valid enterprise logins during initialization. This caused sessions to start without server-managed policy enforcement when validation failed.

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

CVSS
2.0
EPSS
<0.01 · top 99% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
30 Sep 2026
last update
30 Sep 2026
CVE ids
CVE-2026-103012other records

Timeline · 1

  1. 30 Sep 2026CVE-2026-103012: Claude Code selected an API key stored by Claude Code, for example from an earlier `/login` or written directly to its…

Sources · 1

Advisories and databases

  1. 2026-09-30
    CVE-2026-103012: Claude Code selected an API key stored by Claude Code, for example from an earlier `/login` or written directly to its…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-103012

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

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerabilityData leak
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Anthropic, Framework / tooling
owasp llm top 10
LLM02:2025 Sensitive Information DisclosureLLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
claude-codeapi-keypolicy-bypass
dates
happened 30 Sep 2026 · first reported 30 Sep 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 06:33Z · updated 2026-10-18 06:33Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-103012: Claude Code API Key Precedence Policy Bypass

https://gcdradar.vercel.app/incidents/cve-2026-103012-claude-code-api-key-precedence-policy-bypass · AIR-2026-0219 · closed 2026-09-30

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-09-30
- AI role: Attack on AI
- Products: Claude Code
- CVE ids: CVE-2026-103012
- CVSS: 2

## Summary

Claude Code incorrectly prioritized stored personal API keys over valid enterprise logins during initialization. This caused sessions to start without server-managed policy enforcement when validation failed.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-09-30: CVE-2026-103012: Claude Code selected an API key stored by Claude Code, for example from an earlier `/login` or written directly to its… (https://nvd.nist.gov/vuln/detail/CVE-2026-103012)

## Sources

- 2026-09-30 NVD: CVE-2026-103012: Claude Code selected an API key stored by Claude Code, for example from an earlier `/login` or written directly to its… https://nvd.nist.gov/vuln/detail/CVE-2026-103012

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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    Patch now · Disclosed · Patched · since 3 Nov 2026 · updated 9 Nov 2026 · CVE-2026-88968

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