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CVE-2026-63108 is a command injection vulnerability affecting Roo Code through version 3.54.0. The flaw is in the auto-approve execute feature’s command parsing logic, specifically in parse-command.ts, where parameter expansions are replaced with opaque placeholders before command substitutions are extracted and inspected. Because of this processing order, nested command substitutions embedded inside parameter expansion defaults can evade the containsDangerousSubstitution safety check. An attacker can craft input so that the outer command appears to match an allowlisted command prefix and is therefore auto-approved, while the nested payload is later interpreted and executed by the shell through execa. This results in bypass of allowlist and denylist enforcement and enables arbitrary command execution.
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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 public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.