Insecure Temporary File Affecting @anthropic-ai/claude-code package, versions >=2.1.59 <2.1.128
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Jun 2026
- disclosed25 Jun 2026
- creditUnknown
Introduced: 25 Jun 2026
NewCVE-2026-46406 (opens in a new tab)How to fix?
Upgrade @anthropic-ai/claude-code to version 2.1.128 or higher.
Overview
@anthropic-ai/claude-code is an Use Claude, Anthropic's AI assistant, right from your terminal. Claude can understand your codebase, edit files, run terminal commands, and handle entire workflows for you.
Affected versions of this package are vulnerable to Insecure Temporary File via the /copy command. An attacker can access sensitive response data or overwrite arbitrary files by pre-creating the /tmp/claude/response.md path as a symlink and having a privileged user execute the command. This is only exploitable if a local unprivileged user is present on the same system and a privileged user runs the /copy command.