CVE-2026-42438

HIGH 7.7

OpenClaw 2026.4.9 < 2026.4.10 - Sender Policy Bypass in Host Media Attachment Reads

CVSS Score

7.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	openclaw
Product	openclaw
Published	May 5, 2026

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CVSS v3 Breakdown

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 Versions

OpenClaw / OpenClaw

2026.4.9 < 2026.4.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-jhpv-5j76-m56h github.com: https://github.com/openclaw/openclaw/commit/c949af9fabf3873b5b7c484090cb5f5ab6049a98 vulncheck.com: https://www.vulncheck.com/advisories/openclaw-sender-policy-bypass-in-host-media-attachment-reads

Credits

🔍 Akiyama Mio (@Telecaster2147)