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Description

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 application context.

PUBLISHED Reserved 2026-04-04 | Published 2026-04-10 | Updated 2026-04-14 | Assigner VulnCheck




HIGH: 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem types

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

Product status

Default status
unaffected

Any version before 2026.3.22
affected

2026.3.22 (semver)
unaffected

Credits

cyjhhh reporter

References

github.com/...enclaw/security/advisories/GHSA-cxmw-p77q-wchg (GitHub Security Advisory (GHSA-cxmw-p77q-wchg)) third-party-advisory

github.com/...ommit/630f1479c44f78484dfa21bb407cbe6f171dac87 (Patch Commit #1) patch

github.com/...ommit/8b02ef133275be96d8aac2283100016c8a7f32e5 (Patch Commit #2) patch

www.vulncheck.com/...unvalidated-webview-javascriptinterface (VulnCheck Advisory: OpenClaw < 2026.3.22 - Arbitrary Code Execution via Unvalidated WebView JavascriptInterface) third-party-advisory

cve.org (CVE-2026-35643)

nvd.nist.gov (CVE-2026-35643)

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