CVE-2026-34503Network attack vector

Continued Gateway access via unterminated WebSocket sessions

Published Mar 31, 2026 · Updated Mar 31, 2026

Insufficient session expiration in OpenClaw 2026.3.24 and earlier allows remote authenticated users to retain Gateway access. The device removal and token revocation handlers update stored credentials but fail to disconnect already-authenticated WebSocket clients associated with the affected device or role. An attacker must establish a valid session before revocation; that session retains its existing read and write authority until it reconnects or is otherwise disconnected.

CVSS severity8.6
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in OpenClaw 2026.3.24 and earlier allows remote authenticated users to retain Gateway access. The device removal and token revocation handlers update stored credentials but fail to disconnect already-authenticated WebSocket clients associated with the affected device or role. An attacker must establish a valid session before revocation; that session retains its existing read and write authority until it reconnects or is otherwise disconnected.

The record

CVE
CVE-2026-34503
Published
Mar 31, 2026
Updated
Mar 31, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-613, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 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 <2026.3.28

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.3.28

Published CVSS scores

8.6GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA: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-613Insufficient Session Expiration
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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