CVE-2026-63108

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-20. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
2%
EPSS %ILE
77%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 20, 2026
No patch confirmed yet.
generic

Roo Code 3.54.0 Command Injection via Parameter Expansion Parsing | Advisories | VulnCheck

https://www.vulncheck.com/advisories/roo-code-command-injection-via-parameter-expansion-parsing
generic

oss/Roo-Code.md at main · geo-chen/oss · GitHub

https://github.com/geo-chen/oss/blob/main/Roo-Code.md

Vendor Advisories for CVE-2026-63108(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 75× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 190 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 03:55 UTCEG score recompute
  3. 2026-09-18 03:55 UTCGHSA enrichment
  4. 2026-09-17 05:09 UTCEG score recompute
  5. 2026-09-17 05:09 UTCGHSA enrichment
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 12:46 UTCEG score recompute
  8. 2026-09-16 12:46 UTCGHSA enrichment
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-14 04:36 UTCGHSA enrichment
  11. 2026-09-13 16:01 UTCGHSA enrichment
  12. 2026-09-13 03:12 UTCEG score recompute
  13. 2026-09-13 03:12 UTCGHSA enrichment
  14. 2026-09-12 12:34 UTCGHSA enrichment
  15. 2026-09-11 21:56 UTCEG score recompute
  16. 2026-09-11 21:56 UTCGHSA enrichment
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-11 09:37 UTCEPSS rescore
  19. 2026-09-11 09:20 UTCEG score recompute
  20. 2026-09-11 09:20 UTCGHSA enrichment
  21. 2026-09-09 11:50 UTCEG score recompute
  22. 2026-09-09 11:50 UTCGHSA enrichment
  23. 2026-09-08 22:01 UTCEPSS rescore
  24. 2026-09-07 22:50 UTCEG score recompute
  25. 2026-09-07 22:50 UTCGHSA enrichment
Show 75 more
  1. 2026-09-07 16:01 UTCEPSS rescore
  2. 2026-09-06 13:47 UTCEPSS rescore
  3. 2026-09-06 11:37 UTCGHSA enrichment
  4. 2026-09-05 22:00 UTCEG score recompute
  5. 2026-09-05 22:00 UTCGHSA enrichment
  6. 2026-09-05 15:31 UTCEPSS rescore
  7. 2026-09-05 09:24 UTCEG score recompute
  8. 2026-09-05 09:24 UTCGHSA enrichment
  9. 2026-09-04 05:07 UTCEPSS rescore
  10. 2026-09-02 14:12 UTCEPSS rescore
  11. 2026-09-02 01:04 UTCEG score recompute
  12. 2026-09-02 01:04 UTCGHSA enrichment
  13. 2026-09-01 13:54 UTCEPSS rescore
  14. 2026-09-01 04:40 UTCEPSS rescore
  15. 2026-08-31 04:19 UTCEG score recompute
  16. 2026-08-31 04:19 UTCGHSA enrichment
  17. 2026-08-30 19:17 UTCEPSS rescore
  18. 2026-08-30 15:29 UTCGHSA enrichment
  19. 2026-08-30 02:32 UTCEG score recompute
  20. 2026-08-30 02:32 UTCGHSA enrichment
  21. 2026-08-30 01:22 UTCEPSS rescore
  22. 2026-08-28 21:42 UTCEPSS rescore
  23. 2026-08-28 01:40 UTCEG score recompute
  24. 2026-08-28 01:40 UTCGHSA enrichment
  25. 2026-08-27 14:25 UTCEPSS rescore
  26. 2026-08-27 11:37 UTCGHSA enrichment
  27. 2026-08-26 21:43 UTCEG score recompute
  28. 2026-08-26 21:43 UTCGHSA enrichment
  29. 2026-08-26 14:46 UTCEPSS rescore
  30. 2026-08-26 08:56 UTCGHSA enrichment
  31. 2026-08-25 20:13 UTCEG score recompute
  32. 2026-08-25 20:13 UTCGHSA enrichment
  33. 2026-08-25 13:49 UTCEPSS rescore
  34. 2026-08-25 07:33 UTCGHSA enrichment
  35. 2026-08-24 18:57 UTCEG score recompute
  36. 2026-08-24 18:56 UTCGHSA enrichment
  37. 2026-08-24 03:42 UTCGHSA enrichment
  38. 2026-08-23 14:58 UTCGHSA enrichment
  39. 2026-08-23 02:22 UTCEG score recompute
  40. 2026-08-23 02:22 UTCGHSA enrichment
  41. 2026-08-23 00:19 UTCEPSS rescore
  42. 2026-08-22 13:47 UTCGHSA enrichment
  43. 2026-08-22 01:12 UTCEG score recompute
  44. 2026-08-22 01:12 UTCGHSA enrichment
  45. 2026-08-21 23:49 UTCEPSS rescore
  46. 2026-08-21 12:36 UTCGHSA enrichment
  47. 2026-08-20 23:58 UTCEG score recompute
  48. 2026-08-20 23:58 UTCGHSA enrichment
  49. 2026-08-20 22:55 UTCEPSS rescore
  50. 2026-08-20 11:23 UTCGHSA enrichment
  51. 2026-08-19 22:48 UTCEG score recompute
  52. 2026-08-19 22:48 UTCGHSA enrichment
  53. 2026-08-19 17:04 UTCEPSS rescore
  54. 2026-08-19 08:10 UTCGHSA enrichment
  55. 2026-08-18 19:35 UTCEG score recompute
  56. 2026-08-18 19:35 UTCGHSA enrichment
  57. 2026-08-18 13:48 UTCEPSS rescore
  58. 2026-08-18 01:46 UTCEG score recompute
  59. 2026-08-18 01:46 UTCGHSA enrichment
  60. 2026-08-17 13:47 UTCEPSS rescore
  61. 2026-08-17 12:48 UTCGHSA enrichment
  62. 2026-08-17 00:13 UTCEG score recompute
  63. 2026-08-17 00:13 UTCGHSA enrichment
  64. 2026-08-16 14:56 UTCEPSS rescore
  65. 2026-08-16 11:38 UTCEG score recompute
  66. 2026-08-16 11:38 UTCGHSA enrichment
  67. 2026-08-15 23:03 UTCGHSA enrichment
  68. 2026-08-15 10:28 UTCEG score recompute
  69. 2026-08-15 10:28 UTCGHSA enrichment
  70. 2026-08-15 01:30 UTCEPSS rescore
  71. 2026-08-14 21:52 UTCGHSA enrichment
  72. 2026-08-14 09:17 UTCEG score recompute
  73. 2026-08-14 09:17 UTCGHSA enrichment
  74. 2026-08-13 22:00 UTCEPSS rescore
  75. 2026-08-13 20:42 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-63108?
CVE-2026-63108 is a high vulnerability published on July 20, 2026. 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…
When was CVE-2026-63108 disclosed?
CVE-2026-63108 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63108 actively exploited?
CVE-2026-63108 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 22.9% of all scored CVEs.
What is the CVSS score of CVE-2026-63108?
CVE-2026-63108 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-63108?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63108, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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