CVE-2026-53806

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 66% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:vulncheck, epss
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

OpenClaw before 2026.5.12 contains a shell option parsing vulnerability that allows combined POSIX shell flags to bypass exec revalidation checks. Attackers can exploit this by using combined shell options to execute inline shell content without intended allowlist validation, potentially enabling unauthorized command execution when the affected feature is enabled.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
33.7%
KEV
Not listed

Published

June 11, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 11, 2026
Patch available. Sources: github.
generic

OpenClaw < 2026.5.12 - Shell Option Parsing Bypass in Exec Revalidation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openclaw-shell-option-parsing-bypass-in-exec-revalidation
github Patch Available

Combined POSIX shell options could confuse exec revalidation · Advisory · openclaw/openclaw · GitHub

https://github.com/openclaw/openclaw/security/advisories/GHSA-vxx3-6hc9-7cc3

Vendor Advisories for CVE-2026-53806(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 22× in last 7d / 85× 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.

  1. 2026-07-07 01:39 UTCEG score recompute
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:39 UTCEG score recompute
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 13:33 UTCEG score recompute
  8. 2026-07-05 02:31 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-05 00:28 UTCEG score recompute
  11. 2026-07-04 11:17 UTCEG score recompute
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-03 20:47 UTCEG score recompute
  15. 2026-07-03 07:41 UTCEG score recompute
  16. 2026-07-02 17:56 UTCEG score recompute
  17. 2026-07-02 04:50 UTCEG score recompute
  18. 2026-07-01 15:45 UTCEG score recompute
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-07-01 02:39 UTCEG score recompute
  21. 2026-06-30 23:22 UTCEPSS rescore
  22. 2026-06-30 13:34 UTCEG score recompute
  23. 2026-06-30 00:24 UTCEG score recompute
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-29 14:06 UTCEPSS rescore
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  1. 2026-06-29 11:19 UTCEG score recompute
  2. 2026-06-28 22:14 UTCEG score recompute
  3. 2026-06-28 14:07 UTCEPSS rescore
  4. 2026-06-28 09:07 UTCEG score recompute
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-27 20:02 UTCEG score recompute
  8. 2026-06-27 06:56 UTCEG score recompute
  9. 2026-06-27 03:08 UTCEPSS rescore
  10. 2026-06-26 17:50 UTCEG score recompute
  11. 2026-06-26 04:44 UTCEG score recompute
  12. 2026-06-25 15:39 UTCEG score recompute
  13. 2026-06-25 13:49 UTCEPSS rescore
  14. 2026-06-25 02:33 UTCEG score recompute
  15. 2026-06-24 14:05 UTCEPSS rescore
  16. 2026-06-24 13:28 UTCEG score recompute
  17. 2026-06-24 00:04 UTCEG score recompute
  18. 2026-06-23 21:33 UTCEPSS rescore
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-23 10:59 UTCEG score recompute
  21. 2026-06-22 21:54 UTCEG score recompute
  22. 2026-06-22 14:25 UTCEPSS rescore
  23. 2026-06-22 14:25 UTCEPSS rescore
  24. 2026-06-22 08:31 UTCEG score recompute
  25. 2026-06-21 19:05 UTCEG score recompute
  26. 2026-06-21 14:56 UTCEPSS rescore
  27. 2026-06-21 14:56 UTCEPSS rescore
  28. 2026-06-21 04:48 UTCEG score recompute
  29. 2026-06-21 01:59 UTCEPSS rescore
  30. 2026-06-21 01:59 UTCEPSS rescore
  31. 2026-06-20 15:43 UTCEG score recompute
  32. 2026-06-20 02:30 UTCEG score recompute
  33. 2026-06-19 19:26 UTCEPSS rescore
  34. 2026-06-19 19:26 UTCEPSS rescore
  35. 2026-06-19 13:23 UTCEG score recompute
  36. 2026-06-19 00:17 UTCEG score recompute
  37. 2026-06-18 17:52 UTCEPSS rescore
  38. 2026-06-18 17:52 UTCEPSS rescore
  39. 2026-06-18 11:11 UTCEG score recompute
  40. 2026-06-17 21:58 UTCEG score recompute
  41. 2026-06-17 17:53 UTCEPSS rescore
  42. 2026-06-17 08:52 UTCEG score recompute
  43. 2026-06-16 19:47 UTCEG score recompute
  44. 2026-06-16 17:53 UTCEPSS rescore
  45. 2026-06-16 06:42 UTCEG score recompute
  46. 2026-06-15 17:49 UTCEPSS rescore
  47. 2026-06-15 17:49 UTCEPSS rescore
  48. 2026-06-15 17:38 UTCEG score recompute
  49. 2026-06-15 04:30 UTCEG score recompute
  50. 2026-06-14 23:18 UTCEPSS rescore
  51. 2026-06-14 15:25 UTCEG score recompute
  52. 2026-06-14 02:20 UTCEG score recompute
  53. 2026-06-13 23:00 UTCEPSS rescore
  54. 2026-06-13 13:15 UTCEG score recompute
  55. 2026-06-13 00:09 UTCEG score recompute
  56. 2026-06-12 23:12 UTCEPSS rescore
  57. 2026-06-12 23:12 UTCEPSS rescore
  58. 2026-06-12 11:02 UTCEG score recompute
  59. 2026-06-11 21:57 UTCEG score recompute
  60. 2026-06-11 21:57 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53806?
CVE-2026-53806 is a high vulnerability published on June 11, 2026. OpenClaw before 2026.5.12 contains a shell option parsing vulnerability that allows combined POSIX shell flags to bypass exec revalidation checks. Attackers can exploit this by using combined shell options to execute inline shell content without intended allowlist validation, potentially enabling…
When was CVE-2026-53806 disclosed?
CVE-2026-53806 was first published in the National Vulnerability Database on June 11, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53806 actively exploited?
CVE-2026-53806 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53806?
CVE-2026-53806 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53806?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53806, 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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