Vulnerability Details CVE-2026-45136
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 4.6%
CVSS Severity
CVSS v3 Score 7.8
References
- https://github.com/cnighswonger/claude-code-cache-fix/issues/108
- https://github.com/cnighswonger/claude-code-cache-fix/pull/110
- https://github.com/cnighswonger/claude-code-cache-fix/security/advisories/GHSA-g3xq-3gmv-qq8g
- https://github.com/cnighswonger/claude-code-cache-fix/issues/108
- https://github.com/cnighswonger/claude-code-cache-fix/security/advisories/GHSA-g3xq-3gmv-qq8g
Products affected by CVE-2026-45136
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cpe:2.3:a:cnighswonger:claude-code-cache-fix:3.5.0
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cpe:2.3:a:cnighswonger:claude-code-cache-fix:3.5.1