What is CVE-2026-28363?

CVE-2026-28363 is a critical-severity vulnerability in Openclaw, classified under Incomplete List of Disallowed Inputs. CVSS score: 9.9/10. Published 2026-02-27.

How severe is CVE-2026-28363?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Is CVE-2026-28363 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Openclaw

CVE-2026-28363

In OpenClaw before 2026.2.23, tools.exec.safeBins validation for sort could be bypassed via GNU long-option abbreviations (such as --compress-prog) in allowlist mode, leading to approval-free execution paths that were intended to require approval. Only an exact string such as --compress-program was denied.

Published 2026-02-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Openclaw — versions 0

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

Public proof-of-concept exploits

kaleth4/CVE-2026-28363

References

github.com/openclaw/openclaw/security/advisories/GHSA-3c6h-g97w-fg78 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-28363?: CVE-2026-28363 is a critical-severity vulnerability in Openclaw, classified under Incomplete List of Disallowed Inputs. CVSS score: 9.9/10. Published 2026-02-27.
How severe is CVE-2026-28363?: Critical severity. CVSS v3 base score is 9.9 out of 10.
Is CVE-2026-28363 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.