CVE-2026-66421Public exploitNetwork attack vector

Stored XSS via unsanitized lastMessage rendering

Published Jul 30, 2026 · Updated Jul 30, 2026

Stored XSS in Tuğcan Topaloğlu OpenClaw Dashboard 1.1.0 allows remote attackers to run JavaScript in an administrator's browser via agent messages. The sessions table places the API's unescaped lastMessage value into an innerHTML row, allowing inline event handlers to run. Exploitation requires a message to reach a displayed agent transcript and an administrator to load the default sessions page, exposing session tokens and authenticated administrative actions.

CVSS severity8.8
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Tuğcan Topaloğlu OpenClaw Dashboard 1.1.0 allows remote attackers to run JavaScript in an administrator's browser via agent messages. The sessions table places the API's unescaped lastMessage value into an innerHTML row, allowing inline event handlers to run. Exploitation requires a message to reach a displayed agent transcript and an administrator to load the default sessions page, exposing session tokens and authenticated administrative actions.

The record

CVE
CVE-2026-66421
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
Tuğcan Topaloğlu
Product
OpenClaw Dashboard
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 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=1.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tuğcan Topaloğlu · OpenClaw Dashboardversion=1.1.0

Published CVSS scores

8.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
9.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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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