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CVE-2025-54795 is an OS command-injection vulnerability in Anthropic Claude Code versions prior to 1.0.20. Inadequate sanitization and parsing of commands treated as allowlisted permits attacker-controlled input to escape the intended argument context of an approved shell command, including permissive patterns such as echo. The resulting injected shell syntax can execute commands outside the allowlisted operation without invoking Claude Code's normal confirmation prompt.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Claude Code command-injection vulnerability that can enable remote code execution.
A command-injection vulnerability in Anthropic Claude Code's pre-approved command handling. Insufficient escaping of user-controlled input lets an attacker inject arbitrary shell commands through a permitted command, bypassing confirmation controls. Its impact is greater when Claude Code runs with elevated privileges or processes untrusted input.
A previously identified Claude Code code execution vulnerability mentioned as background/comparison material, not the main subject of this post.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.