CVE-2026-45136 HIGH

CVE-2026-45136: claude-code-cache-fix: Local code execution via Python triple-quote injection in tools/quota-statusline.sh

Vendor Cnighswonger
Product claude-code-cache-fix
Weakness CWE-78
Published May 27, 2026
Last update June 2, 2026

CVSS base score

8.6/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

What the vulnerability does

Description

claude-code-cache-fix is a cache optimization proxy for Claude Code. From 3.5.0 to before 3.5.2, tools/quota-statusline.sh (introduced in v3.5.0) interpolates Claude Code's hook stdin payload directly into a Python triple-quoted string literal. A ''' byte sequence in any user-controlled field of the payload closes the literal early and lets following bytes execute as Python in the user's Claude Code process. This vulnerability is fixed in 3.5.2.

Key dates

Disclosure timeline

May 27, 2026 CVE published
June 2, 2026 Record updated