CVE-2026-55607: claude code from 2.1.38 (inclusive), before 2.1.163 (exclusive); +1 more affected products

CVE-2026-55607. CVSS 3.1 base score 8.8 (HIGH, NVD). EPSS 0.00687 (percentile 0.52418), scored 25-Oct-2026.

Affected technology

claude code · from 2.1.38 (inclusive), before 2.1.163 (exclusive)
anthropic

claude-code · >= 2.1.38, < 2.1.163
anthropics

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · Passive user interaction

What an attacker can do

An attacker could overwrite files in the user's home directory (such as .zshenv), leading to code execution outside of seatbelt sandbox restrictions. Vendor/CNA’s CVSS 4.0 assessment (base score 7.7/10) rates confidentiality, integrity and availability impact as high.

Published 25-Oct-2026 21:45 UTC

CWE: CWE-22, CWE-59, CWE-78
CCR priority: 35.4 /100 (P4)
CVSS 3.1: 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · NVD
EPSS: 0.00687 · percentile 0.52418 · 2026-10-25
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 21:44:36.062275+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-55607.html