CVE-2026-33068Network attack vector

Tool execution via repo-controlled permission mode

Published Mar 20, 2026 · Updated Mar 20, 2026

Workspace trust bypass in Claude Code before 2.1.53 allows remote attackers to gain tool execution through a malicious repository. The startup path resolves permissions.defaultMode from .claude/settings.json before deciding whether to show the trust dialog, so bypassPermissions suppresses the prompt. Exploitation requires a developer to open the attacker-controlled repository; the resulting permissive session executes tools without explicit consent.

CVSS severity7.7
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Workspace trust bypass in Claude Code before 2.1.53 allows remote attackers to gain tool execution through a malicious repository. The startup path resolves permissions.defaultMode from .claude/settings.json before deciding whether to show the trust dialog, so bypassPermissions suppresses the prompt. Exploitation requires a developer to open the attacker-controlled repository; the resulting permissive session executes tools without explicit consent.

The record

CVE
CVE-2026-33068
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Anthropic
Product
Claude Code
Classifications
CWE-807, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.1.53

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Anthropic · Claude Codeversion=< 2.1.53

Published CVSS scores

7.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-807Reliance on Untrusted Inputs in a Security Decision
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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