CVE-2026-33578 MEDIUM

CVE-2026-33578: OpenClaw < 2026.3.28 - Sender Policy Allowlist Bypass via Policy Downgrade in Google Chat and Zalouser Extensions

Vendor Openclaw
Product OpenClaw
Weakness CWE-863 · Incorrect authorization
Published March 31, 2026
Last update April 2, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
April 2, 2026 Record updated