CVE-2025-55284

High7.1

claude-code: Claude Code's Permissive Default Allowlist Enables Unauthorized File Read and Network Exfiltration in Claude Codetitle from the CVE record

Claude Code is an agentic coding tool. Prior to version 1.0.4, it's possible to bypass the Claude Code confirmation prompts to read a file and then send file contents over the network without user confirmation due to an overly broad allowlist of safe commands. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. Users on standard Claude Code auto-update received this fix automatically after release. Current users of Claude Code are unaffected, as versions prior to 1.0.24 are deprecated and have been forced to update.

CVSS: 7.1v4.0
EPSS (exploit probability): 0.6%48th pct
CISA KEV: Not listed

EPSS trendFIRST daily scores, last 90 days

2026-09-25 → 2026-10-26 · 31 days · 0.5%–0.6%

Daily values

FIRST EPSS daily scores for this CVE
Score date	EPSS	Percentile
2026-10-26	0.6%	48.2%
2026-10-25	0.6%	48.2%
2026-10-24	0.5%	40.4%
2026-10-23	0.5%	40.3%
2026-10-22	0.5%	40.3%
2026-10-21	0.5%	40.2%
2026-10-20	0.5%	40.0%
2026-10-19	0.5%	39.9%
2026-10-18	0.5%	39.9%
2026-10-17	0.5%	39.9%
2026-10-16	0.5%	39.8%
2026-10-15	0.5%	39.8%
2026-10-14	0.5%	39.7%
2026-10-13	0.5%	39.5%
2026-10-12	0.5%	39.4%
2026-10-11	0.5%	39.4%
2026-10-10	0.5%	39.4%
2026-10-09	0.5%	39.3%
2026-10-08	0.5%	39.3%
2026-10-07	0.5%	39.3%
2026-10-06	0.5%	39.2%
2026-10-05	0.5%	39.1%
2026-10-04	0.5%	39.1%
2026-10-03	0.5%	39.1%
2026-10-02	0.5%	39.0%
2026-10-01	0.5%	39.0%
2026-09-30	0.5%	38.9%
2026-09-29	0.5%	38.8%
2026-09-27	0.5%	38.8%
2026-09-26	0.5%	37.5%
2026-09-25	0.5%	37.4%

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/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

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