CVE-2026-33578

MEDIUM

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

Title source: cna
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Third Party Advisory third-party-advisory
GitHub Security Advisory (GHSA-63mg-xp9j-jfcm)
https://github.com/openclaw/openclaw/security/advisories/GHSA-63mg-xp9j-jfcm
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.3.28 - Sender Policy Allowlist Bypass via Policy Downgrade in Google Chat and Zalouser Extensions
https://www.vulncheck.com/advisories/openclaw-sender-policy-allowlist-bypass-via-policy-downgrade-in-google-chat-and-zalouser-extensions

Scores

CVSS v3 4.3
EPSS 0.0030
EPSS Percentile 21.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-863
Status published
Products (4)
npm/openclaw 0 - 2026.3.28npm
OpenClaw/OpenClaw < 2026.3.28
openclaw/openclaw < 2026.3.28
OpenClaw/OpenClaw 2026.3.28
Published Mar 31, 2026
Tracked Since Mar 31, 2026