by Kastro
Paper/Archive/CVE-2025-54795

CVE-2025-54795

anthropics claude-code — Claude Code echo command allowed bypass of user approval prompt for command execution

EPSS 1%CVSS 9.8
critical.is priorityof 100
42
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 64.1.641 × 2012.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Claude Code is an agentic coding tool. In versions below 1.0.20, an error in command parsing makes it possible to bypass the Claude Code confirmation prompt to trigger execution of an untrusted command. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. This is fixed in version 1.0.20.

Affected

ProductAffectedFixed inSource
claude-code< 1.0.20–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/anthropics/claude-code/security/advisories/GHSA-x56v-x2h6-7j34