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Vulnerability record · CVE-2026-63108 · published 20 July 2026

CVE-2026-63108: Roo Code through 3.54.0 contains a command injection vulnerability in the auto-approve execute feature that al…

Roo Code through 3.54.0 contains a command injection vulnerability in the auto-approve execute feature that allows attackers to bypass allowlist/denylist enforcement by nesting command substitutions inside parameter expansion defaults. The command parser in parse-command.ts replaces parameter expansions with opaque placeholders before extracting command substitutions, causing the containsDangerousSubstitution guard to miss nested payloads, which are then auto-approved based on the outer allowlisted command prefix and executed by the shell via execa, enabling arbitrary command execution.

7.7 CVSS 4.0 High EPSS 1.8% · top 22.8% CWE-184 · CWE-184 Deferred
7.7CVSS 4.0 base score
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
23 Jul 2026Last modified by NVD

Description

Roo Code through 3.54.0 contains a command injection vulnerability in the auto-approve execute feature that allows attackers to bypass allowlist/denylist enforcement by nesting command substitutions inside parameter expansion defaults. The command parser in parse-command.ts replaces parameter expansions with opaque placeholders before extracting command substitutions, causing the containsDangerousSubstitution guard to miss nested payloads, which are then auto-approved based on the outer allowlisted command prefix and executed by the shell via execa, enabling arbitrary command execution.

CVSS:4.0/AV:N/AC:L/AT:P/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:

References

LinkTags
https://github.com/geo-chen/oss/blob/main/Roo-Code.md
https://www.vulncheck.com/advisories/roo-code-command-injection-via-parameter-expansion-parsing

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Source: NIST National Vulnerability Database (record CVE-2026-63108), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.