CVE-2026-42438

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

State: Published
Severity: 4.9 Medium
Published: May 5, 2026
Updated: May 5, 2026
Reserved: Apr 27, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	4.9 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N	VulnCheck
3.1	7.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N	VulnCheck

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
OpenClawOpenClaw	2026.4.9 to before 2026.4.10Affected 2026.4.10Not affected

References

GitHub Security Advisory (GHSA-jhpv-5j76-m56h)vendor-advisory
Patch Commitpatch
VulnCheck Advisory: OpenClaw 2026.4.9 < 2026.4.10 - Sender Policy Bypass in Host Media Attachment Readsthird-party-advisory

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