CVE-2026-35622Network attack vector

Authenticated action execution via unbound add-on principal

Published Apr 9, 2026 · Updated Apr 9, 2026

Authentication bypass in OpenClaw before 2026.3.22 allows remote authenticated users to invoke Google Chat webhook actions. In verifyGoogleChatRequest, app-url verification accepted any verified Google Workspace add-on issuer without comparing the token subject to the configured appPrincipal. The Google Chat app-url integration must be enabled, and the attacker needs a valid add-on token from another deployment; successful requests reach only actions exposed through that integration.

CVSS severity6.0
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in OpenClaw before 2026.3.22 allows remote authenticated users to invoke Google Chat webhook actions. In verifyGoogleChatRequest, app-url verification accepted any verified Google Workspace add-on issuer without comparing the token subject to the configured appPrincipal. The Google Chat app-url integration must be enabled, and the attacker needs a valid add-on token from another deployment; successful requests reach only actions exposed through that integration.

The record

CVE
CVE-2026-35622
Published
Apr 9, 2026
Updated
Apr 9, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-290, T1078.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.3.22

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.3.22

Published CVSS scores

6.0VulnCheckCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
7.1NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1078.004Cloud Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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