How severe is CVE-2025-59536?

CVE-2025-59536 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-59536 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59536?

CVE-2025-59536 affects Anthropic Claude Code. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-59536?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-59536 have an EU (EUVD) identifier?

Yes. CVE-2025-59536 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-32507.

When was CVE-2025-59536 published?

CVE-2025-59536 was published on 2025-10-03 and last updated on 2026-06-17.

CVE-2025-59536

CVE-2025-59536 is a high-severity vulnerability in Anthropic Claude Code with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 30% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 30% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-32507
Weakness: CWE-94
Affected product: Anthropic Claude Code
Published: 2025-10-03
Last modified: 2026-06-17

Description

Claude Code is an agentic coding tool. Versions before 1.0.111 were vulnerable to Code Injection due to a bug in the startup trust dialog implementation. Claude Code could be tricked to execute code contained in a project before the user accepted the startup trust dialog. Exploiting this requires a user to start Claude Code in an untrusted directory. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version. This issue is fixed in version 1.0.111.

Frequently asked questions

What is CVE-2025-59536?: Claude Code is an agentic coding tool. Versions before 1.0.111 were vulnerable to Code Injection due to a bug in the startup trust dialog implementation. Claude Code could be tricked to execute code contained in a project before the user accepted the startup trust dialog. Exploiting this requires a user to start Claude Code in an untrusted directory. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version. This issue is fixed in version 1.0.111.
How severe is CVE-2025-59536?: CVE-2025-59536 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-59536 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59536?: CVE-2025-59536 affects Anthropic Claude Code. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-59536?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-59536 have an EU (EUVD) identifier?: Yes. CVE-2025-59536 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-32507.
When was CVE-2025-59536 published?: CVE-2025-59536 was published on 2025-10-03 and last updated on 2026-06-17.

References

https://github.com/anthropics/claude-code/security/advisories/GHSA-4fgq-fpq9-mr3g

Affected products (1)

cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*

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