CVE-2026-45136

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

State: Published
Severity: 8.6 High
Published: May 27, 2026
Updated: Jun 2, 2026
Reserved: May 8, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	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	GitHub_M

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
claude-code-cache-fixcnighswonger	>= 3.5.0, < 3.5.2Affected

References

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