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CVE

CVE-2025-64755

@anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes
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CVE

CVE-2025-64755

@anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes

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!

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.7
-
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/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
C
H
U
0
-
C
H
U
8.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Related Resources

No items found.

References

https://github.com/anthropics/claude-code/security/advisories/GHSA-7mv8-j34q-vp7q, https://nvd.nist.gov/vuln/detail/CVE-2025-64755, https://github.com/anthropics/claude-code

Severity

8.8

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8.8
EPSS Probability
0.00091%
EPSS Percentile
0.26246%
Introduced Version
0,0.2.9
Fix Available
2.0.31

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