What is CVE-2026-35643?

CVE-2026-35643 is a high-severity vulnerability in Openclaw, classified under Improper Verification of Source of a Communication Channel. CVSS score: 8.8/10. Published 2026-04-10.

How severe is CVE-2026-35643?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Openclaw

CVE-2026-35643

OpenClaw before 2026.3.22 contains an unvalidated WebView JavascriptInterface vulnerability allowing attackers to inject arbitrary instructions. Untrusted pages can invoke the canvas bridge to execute malicious code within the Android appl…

EPSS: 0.000 (14.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Openclaw — versions 0, 2026.3.22

Weakness classification (CWE)

CWE-940 — Improper Verification of Source of a Communication Channel

References

GitHub Security Advisory (GHSA-cxmw-p77q-wchg) (third-party-advisory)
Patch Commit #1 (patch)
Patch Commit #2 (patch)
VulnCheck Advisory: OpenClaw < 2026.3.22 - Arbitrary Code Execution via Unvalidated WebView JavascriptInterface (third-party-advisory)

Frequently asked questions

What is CVE-2026-35643?: CVE-2026-35643 is a high-severity vulnerability in Openclaw, classified under Improper Verification of Source of a Communication Channel. CVSS score: 8.8/10. Published 2026-04-10.
How severe is CVE-2026-35643?: High severity. CVSS v3 base score is 8.8 out of 10.