---
id: CVE-2026-100538
title: >-
  OpenClaw (npm package 'openclaw') before 2026.8.1 does not apply the
  originating sender's global or per-agent toolsBySender policy when handling
  outbound attachments
summary: >-
  OpenClaw (npm package 'openclaw') before 2026.8.1 does not apply the
  originating sender's global or per-agent toolsBySender policy when handling
  outbound attachments. A sender that has been explicitly denied filesystem read
  tools can sti…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-863
vendor: OpenClaw
product: OpenClaw
affected:
  - OpenClaw < 2026.8.1
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T03:16:59.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100538'
references:
  - url: >-
      https://github.com/openclaw/openclaw/security/advisories/GHSA-w5x7-c87m-3jpc
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-local-file-read-via-outbound-attachments
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T03:25:24.677Z'
epss: 0.00258
epssPercentile: 0.15663
---

## Overview

OpenClaw (npm package 'openclaw') before 2026.8.1 does not apply the originating sender's global or per-agent toolsBySender policy when handling outbound attachments. A sender that has been explicitly denied filesystem read tools can still cause a known local file to be read and returned via a final-response media directive or a message attachment, disclosing local file contents to an admitted requester whose agent turn did not include the read tool. Exploitation requires knowledge or derivation of a useful host path and a delivery flow that accepts local attachments. The issue is fixed in version 2026.8.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.