CVE-2026-45136
Last modified
CVE-2026-45136 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.19% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cnighswonger | Claude-Code-Cache-Fix | >= 3.5.0, < 3.5.2 |
References
- 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
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-45136?
How severe is CVE-2026-45136?
How do I fix CVE-2026-45136?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-45130Vim is an open source, command line text editor. Prior to ve…5.5
- CVE-2026-45131CloudPirates Open Source Helm Charts is a collection of Helm…10
- CVE-2026-45132CloudPirates Open Source Helm Charts is a collection of Helm…10
- CVE-2026-45133Symfony is a PHP framework for web and console applications …7.5
- CVE-2026-45134LangSmith Client SDKs provide SDK's for interacting with the…7.1
- CVE-2026-45135Caddy is an extensible server platform that uses TLS by defa…8.1
- CVE-2026-45137Anchor is a framework providing several convenient developer…8.2
- CVE-2026-45138CI4MS is a CodeIgniter 4-based content management system ske…5.4
- CVE-2026-45139CI4MS is a CodeIgniter 4-based content management system ske…6.5
- CVE-2026-4514A flaw has been found in PbootCMS up to 3.2.12. Affected by …6.3
- CVE-2026-45147SiYuan is an open-source personal knowledge management syste…4.3
- CVE-2026-45148SiYuan is an open-source personal knowledge management syste…4.3
Are you affected by CVE-2026-45136?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST