CVE-2026-42438 — HIGH (7.7)

Vulnerability Description

OpenClaw versions 2026.4.9 before 2026.4.10 contain a sender policy bypass vulnerability in the outbound host-media attachment read helper that allows unauthorized local file disclosure. Attackers with denied read access via toolsBySender or group policy can trigger host-media attachment loading to bypass sender and group-scoped authorization boundaries and retrieve readable local files through the outbound media path.

CVSS Score

7.7

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Openclaw	Openclaw	2026.4.9

Related Weaknesses (CWE)

CWE-863

References

https://github.com/openclaw/openclaw/commit/c949af9fabf3873b5b7c484090cb5f5ab604Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-jhpv-5j76-m56hVendor Advisory
https://www.vulncheck.com/advisories/openclaw-sender-policy-bypass-in-host-mediaThird Party Advisory

FAQ

What is CVE-2026-42438?

CVE-2026-42438 is a vulnerability with a CVSS score of 7.7 (HIGH). OpenClaw versions 2026.4.9 before 2026.4.10 contain a sender policy bypass vulnerability in the outbound host-media attachment read helper that allows unauthorized local file disclosure. Attackers wit...

How severe is CVE-2026-42438?

CVE-2026-42438 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-42438?

Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.