Vulnerability in Openclaw
CVE-2026-41398
OpenClaw before 2026.4.2 contains an improper access control vulnerability in the iOS A2UI bridge that treats generic local-network pages as trusted origins. Attackers can inject unauthorized agent.request runs by loading attacker-controlled pages from local-network or tailnet hosts, polluting session state and consuming budget.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (8.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Openclaw — versions 0, 2026.4.2
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-4p4f-fc8q-84m3 (vendor-advisory, Patch, Vendor Advisory)
- github.com/openclaw/openclaw/commit/49d08382a90f71dabe2877b3f6729ad85f808d57 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-unauthorized-agent-request-dispatch-via-u… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-41398?
- CVE-2026-41398 is a medium-severity vulnerability in Openclaw, classified under Origin Validation Error. CVSS score: 4.6/10. Published 2026-04-28.
- How severe is CVE-2026-41398?
- Medium severity. CVSS v3 base score is 4.6 out of 10.