CVE-2026-53855

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-16. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

OpenClaw before 2026.4.2 contains an inline-eval bypass vulnerability allowing authenticated operators to weaken strict allowlist checks via shell positional parameters. Attackers can combine allowlisted tools with shell positional arguments to place inline-eval content in shell carriers outside intended allowlist rules, enabling execution of unapproved shell-provided content.

CVSS v3
8.1
EG Score
8.1(high)
EPSS
17.4%
KEV
Not listed

Published

June 16, 2026

Last Modified

June 18, 2026

Advisory Details (2)

Auto-updated Jun 16, 2026
Patch available. Sources: github.
generic

OpenClaw < 2026.4.2 - Shell Positional Parameters Bypass in Inline-Eval Checks | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openclaw-shell-positional-parameters-bypass-in-inline-eval-checks
github Patch Available

Shell positional parameters could weaken strict inline-eval checks · Advisory · openclaw/openclaw · GitHub

https://github.com/openclaw/openclaw/security/advisories/GHSA-5cj2-3jr2-5h77

Vendor Advisories for CVE-2026-53855(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
openclaw—2026.4.2—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 23× 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.

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

Frequently asked(5)

What is CVE-2026-53855?
CVE-2026-53855 is a high vulnerability published on June 16, 2026. OpenClaw before 2026.4.2 contains an inline-eval bypass vulnerability allowing authenticated operators to weaken strict allowlist checks via shell positional parameters. Attackers can combine allowlisted tools with shell positional arguments to place inline-eval content in shell carriers outside…
When was CVE-2026-53855 disclosed?
CVE-2026-53855 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on June 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53855 actively exploited?
CVE-2026-53855 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53855?
CVE-2026-53855 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-53855?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53855, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-53855

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