OpenClaw Dashboard Stored XSS via lastMessage Session Field
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| tugcantopaloglu | openclaw-dashboard | 1.1.0 and later | — | No fix listed | CNA |
- openclaw-dashboard Vendortugcantopaloglu Affected 1.1.0 and later Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:tugcantopaloglu:openclaw_agent_dashboard:*:*:*:*:*:*:*:* | up to 1.1.0 | Vulnerable | tugcantopaloglu |
- cpe:2.3:a:tugcantopaloglu:openclaw_agent_dashboard:*:*:*:*:*:*:*:* Versions up to 1.1.0 Vulnerable ·tugcantopaloglu
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-66421
- 2026-10-03 Alias added: GHSA-hc44-65x2-rvc2
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
More tugcantopaloglu Openclaw Agent Dashboard vulnerabilities
- TI-2026-47175 OpenClaw Dashboard v3.0.0 Stored XSS via Failed Login Username Field CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-66421 · CVE Program
- CVE-2026-66421 · NVD
- FIRST EPSS
- GHSA-hc44-65x2-rvc2 · GitHub Advisory Database · CC BY 4.0
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