CVE-2025-59536
A public proof of concept exists; no exploitation attested.
- Published2025-10-03
- Fixed in1.0.111
- WeaknessCWE-94
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Claude Code is an agentic coding tool. Versions before 1.0.111 were vulnerable to Code Injection due to a bug in the startup trust dialog implementation. Claude Code could be tricked to execute code contained in a project before the user accepted the startup trust dialog. Exploiting this requires a user to start Claude Code in an untrusted directory. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version. This issue is fixed in version 1.0.111.
Timeline
dates in UTC- 2025-10-0307:15CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-59536?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-59536?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD · OSV| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.0 | < 1.0.111 | 1.0.111 | NVD · OSV |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Anthropic claude code to 1.0.111
Advisories and patches
- github.comVendor Advisory
Detection
read 2026-10-23 19:24 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 6 repositories, unverifiedRohitberiwala/Claude-Code-MCP-Injection-PoCAetherAI3/AETHER-PROTOCOL-PNetVanguard-cmd/CVE-2025-59536TreRB/ai-ide-config-guardRazi-Interactive/claude-project-scanner PoC-in-GitHub
Sources
- CISA-ADPSSVC decisionnone2025-10-03
- OpenCVESSVC decisionnone—
- CNACVSS 4.08.7read 2026-10-23
- NVDCVSS 3.18.8read 2026-10-23
- CNAweakness (CWE)CWE-94read 2026-10-23
- FIRST EPSSEPSS score27.2 %read 2026-10-23
- PoC-in-GitHubproof of concept6read 2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 4.0 vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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
- Published
- 2025-10-03
- Last Modified
- 2026-10-12
- NVD status
- Analyzed
Frequently asked questions
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