HOMEVULNERABILITIESCVE-2026-45136
HIGH

CVE-2026-45136

CWE-78Published: May 27, 2026· Updated: Jun 2, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:6.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-45136 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

cnighswonger1 product
claude-code-cache-fix
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/cnighswonger/claude-code-cache-fix/pull/110
ADVISORYhttps://github.com/cnighswonger/claude-code-cache-fix/security/advisories/GHSA-g3xq-3gmv-qq8g
ADVISORYhttps://github.com/cnighswonger/claude-code-cache-fix/security/advisories/GHSA-g3xq-3gmv-qq8g

All References (5)

→
https://github.com/cnighswonger/claude-code-cache-fix/issues/108Exploit · Issue Tracking
→
https://github.com/cnighswonger/claude-code-cache-fix/pull/110Issue Tracking · Patch
→
https://github.com/cnighswonger/claude-code-cache-fix/security/advisories/GHSA-g3xq-3gmv-qq8gMitigation · Vendor Advisory
→
https://github.com/cnighswonger/claude-code-cache-fix/issues/108Exploit · Issue Tracking
→
https://github.com/cnighswonger/claude-code-cache-fix/security/advisories/GHSA-g3xq-3gmv-qq8gMitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2026-45136
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-78
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMay 27, 2026

Related CVEs (CWE-78)

CVE-2026-41553
10.0
CVE-2026-34234
KEV10.0
CVE-2026-33478
KEV10.0
CVE-2026-56415
10.0
CVE-2026-6349
10.0
CVE-2026-10520
KEV10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-45136 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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