CVE-2026-27522: OpenClaw < 2026.2.24 - Arbitrary File Read via sendAttachment and setGroupIcon Message Actions

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-18 · updated 2026-06-17
Weakness: CWE-22

Description

OpenClaw versions prior to 2026.2.24 contain a local media root bypass vulnerability in sendAttachment and setGroupIcon message actions when sandboxRoot is unset. Attackers can hydrate media from local absolute paths to read arbitrary host files accessible by the runtime user.

Affected products

OpenClaw: before 2026.2.24 — fixed in 2026.2.24

How to fix

Upgrade to a fixed version: OpenClaw 2026.2.24. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/commit/270ab03e379f9653e15f7033c9830399b66b7e51
https://github.com/openclaw/openclaw/security/advisories/GHSA-fqcm-97m6-w7rm
https://www.vulncheck.com/advisories/openclaw-arbitrary-file-read-via-sendattachment-and-setgroupicon-message-actions

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