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CVE-2026-45136

Cnighswonger Claude-code-cache-fix command injection

7.8 HIGHPublic exploitEPSS 0.21%
  1. Published27 May 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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Cnighswonger Claude-code-cache-fix≥ 3.5.0 < 3.5.2

Remediation

Fixed in
Cnighswonger Claude-code-cache-fix≥ 3.5.2

References

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Frequently asked

Is CVE-2026-45136 being actively exploited?

CVE-2026-45136 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.21%.

How severe is CVE-2026-45136?

CVE-2026-45136 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.21% probability of exploitation.

Which products are affected by CVE-2026-45136?

Affected products include Cnighswonger Claude-code-cache-fix.

How do I fix CVE-2026-45136?

Upgrade affected software to a fixed version, for example Cnighswonger Claude-code-cache-fix 3.5.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-45136 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.