CVE-2026-66421: high-severity vulnerability in tugcantopaloglu openclaw-dashboard
OpenClaw Dashboard Stored XSS via lastMessage Session Field
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.8epss 0.6%
from disclosure to weaponsame day
Published on NVDJul 30
1st PoCJul 30
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 stored in the session transcript and interpolated unsanitized into innerHTML on the default landing page, allowing theft of session tokens and unauthorized calls to authenticated administrative endpoints including agent instruction file modification.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Affected products
tugcantopaloglu · openclaw-dashboardpublic PoCs found — 1
githubgithub.com/theopaid/CVE-2026-66421-OpenClaw-Dashboard-Stored-XSS-via-lastMessage-Session-Field★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — tugcantopaloglu openclaw-dashboard
In the same product, most dangerous first.