HighVulnerabilityLLM-specific

CVE-2026-45136: claude-code-cache-fix code injection through quota-statusline.sh hook payload

Source: NVD(opens in a new tab)
Identifier: CVE-2026-45136
Published: May 27, 2026
Record updated: October 9, 2026

Affected: claude-code-cache-fix >= 3.5.0, < 3.5.2
Fixed in: 3.5.2
Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.2%

Summary

claude-code-cache-fix, a cache optimization proxy for Claude Code, is affected from 3.5.0 to before 3.5.2. In tools/quota-statusline.sh, introduced in v3.5.0, Claude Code's hook stdin payload is interpolated directly into a Python triple-quoted string literal. A ''' sequence in any user-controlled payload field closes the literal early, so following bytes execute as Python in the user's Claude Code process.

Mitigation

Fixed in 3.5.2.

Details

Scores and exploitation

Patch available: Yes
EPSS: 0.2%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 12, 2026.
Disclosure date: May 27, 2026

Weaknesses and techniques

Weakness (CWE): CWE-78
CWE-94
Attack pattern (CAPEC): CAPEC-242
CAPEC-88

Affected

Packages: claude-code-cache-fix@>= 3.5.0, < 3.5.2 (fixed: 3.5.2)
Vendors: Anthropic

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Plugin
Impact: Confidentiality,
Integrity
Labels: security,
industry

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-45136

First tracked: May 28, 2026 at 02:08 AM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 85% (self-assessed)

Summary

Mitigation

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