Improper Access Control in OpenClaw iOS A2UI Bridge
CVE-2026-41398

2.1LOW

Key Information:

Vendor

Openclaw

Status
Openclaw
Vendor
CVE Published:
28 April 2026

What is CVE-2026-41398?

OpenClaw versions before 2026.4.2 suffer from an improper access control vulnerability in the iOS A2UI bridge. By treating local-network pages as trusted origins, this flaw allows attackers to inject unauthorized agent.request executions. They can exploit this vulnerability by loading malicious pages from local-network or tailnet hosts, which can lead to session state pollution and compromise user budgets.

Affected Version(s)

OpenClaw 0 < 2026.4.2

OpenClaw 2026.4.2

References

https://github.com/openclaw/openclaw/security/advisories/...
vendor-advisory
https://github.com/openclaw/openclaw/commit/49d08382a90f7...
patch
https://www.vulncheck.com/advisories/openclaw-unauthorize...
third-party-advisory

CVSS V4

Score:
2.1
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Nathan (@nexrin)
KeenSecurityLab
qclawer
.