CVE-2025-64755
@anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes
EPSS 0.11%
Description
Due to an error in sed command parsing, it was possible to bypass the Claude Code read-only validation and write to arbitrary files on the host system. 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. Thank you to Adam Chester - SpecterOps for reporting this issue!
How to fix CVE-2025-64755
To remediate CVE-2025-64755, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.31 or later
Is CVE-2025-64755 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.0.31
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |