CVE•Published 2026-07-30•Modified 2026-09-03•1 article on news•4 live references•NVD data

CVE-2026-66421Tugcantopaloglu · Openclaw_agent_dashboard

Vulnerability data via NVD (ingested)

CVSS v3.1
9.3
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS percentile
39
Exploit Prediction Scoring System · top 61% of all CVEs
Description

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.

Timeline
Published 2026-07-30
Modified 2026-09-03

External references

Search for exposed instances

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More intel sources (5)

Known PoCs on GitHub

No public proof-of-concept repositories found for CVE-2026-66421 on GitHub.