CVE-2026-66421: OpenClaw Dashboard contains a stored cross-site scripting vulnerability that allows unauthenticated remote att

Q: How do I fix CVE-2026-66421?

openclaw agent dashboard: upgrade to newer than 1.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-66421 being exploited?

CVE-2026-66421 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-66421 affect?

CVE-2026-66421 affects openclaw agent dashboard. Severity is critical (CVSS 9.3). OpenClaw Dashboard contains a stored cross-site scripting vulnerability that allows unauthenticated remote attackers to execute arbitrary JavaScript in the administrator's browser session by injecting HTML markup into agent transcript messa

Q: How urgent is CVE-2026-66421?

Priority 50/100. Critical severity; Public exploit reference

This month

CRITICAL 9.3UPGRADE

CVE-2026-66421 is a critical-severity flaw (CVSS 9.3) affecting openclaw agent dashboard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenClaw Dashboard contains a stored cross-site scripting vulnerability that allows unauthenticated remote attackers to execute arbitrary JavaScript in the administrator's browser session by injecting HTML markup into agent transcript messages processed through the sessions API. Attackers can craft a message containing inline event handler payloads such as an img tag with an onerror attribute within the 60-character rendering budget, which is sto

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-07-30
Last modified	2026-09-03

Publisher (CNA): VulnCheck · Vendor: tugcantopaloglu

Last updated 2026-09-03 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-30 23:16 UTCPublished CVE record published
2026-09-03 19:56 UTCUpdated Record last modified

tugcantopaloglu openclaw agent dashboard UPGRADE

Affected: <= 1.1.0

Fixed in: newer than 1.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openclaw-agent-dashboard || rpm -q openclaw-agent-dashboard || openclaw-agent-dashboard --version

2. UPGRADE to newer than 1.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openclaw-agent-dashboard

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openclaw-agent-dashboard

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-66421?

openclaw agent dashboard: upgrade to newer than 1.1.0. Exact commands for each OS are on this page.

Is CVE-2026-66421 being exploited?

CVE-2026-66421 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-66421 affect?

CVE-2026-66421 affects openclaw agent dashboard. Severity is critical (CVSS 9.3). OpenClaw Dashboard contains a stored cross-site scripting vulnerability that allows unauthenticated remote attackers to execute arbitrary JavaScript in the administrator's browser session by injecting HTML markup into agent transcript messa

How urgent is CVE-2026-66421?

Priority 50/100. Critical severity; Public exploit reference

Related CVEs

CVE-2026-66418 CRITICAL 9.3 UPGRADE OpenClaw Dashboard v3.0.0 contains a stored cross-site scripting vulnerability that allows unauthenticated rem

References

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