---
id: CVE-2026-33578
title: >-
  OpenClaw before 2026.3.28 contains a sender policy bypass vulnerability in the
  Google Chat and Zalouser extensions where route-level group allowlist policies
  silently downgrade to open policy
summary: >-
  OpenClaw before 2026.3.28 contains a sender policy bypass vulnerability in the
  Google Chat and Zalouser extensions where route-level group allowlist policies
  silently downgrade to open policy. Attackers can exploit this policy
  resolution…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-863
vendor: openclaw
product: openclaw
affected:
  - openclaw < 2026.3.28
patched:
  - openclaw 2026.3.28
published: '2026-03-31'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-33578'
references:
  - url: >-
      https://github.com/openclaw/openclaw/commit/e64a881ae0fb8af18e451163f4c2d611d60cc8e4
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/openclaw/openclaw/security/advisories/GHSA-63mg-xp9j-jfcm
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openclaw-sender-policy-allowlist-bypass-via-policy-downgrade-in-google-chat-and-zalouser-extensions
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00307
epssPercentile: 0.20926
ingestedAt: '2026-07-24T21:39:13.118Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-04-01T03:55:25.603378Z'
---

## Overview

OpenClaw before 2026.3.28 contains a sender policy bypass vulnerability in the Google Chat and Zalouser extensions where route-level group allowlist policies silently downgrade to open policy. Attackers can exploit this policy resolution flaw to bypass sender restrictions and interact with bots despite configured allowlist restrictions.

## Affected

- `openclaw < 2026.3.28`

## Remediation

Upgrade past the affected range:

- `openclaw 2026.3.28`