How severe is CVE-2026-27009?

CVE-2026-27009 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-27009 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27009?

CVE-2026-27009 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27009?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-27009 have an EU (EUVD) identifier?

Yes. CVE-2026-27009 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8408.

When was CVE-2026-27009 published?

CVE-2026-27009 was published on 2026-02-20 and last updated on 2026-06-17.

CVE-2026-27009

CVE-2026-27009 is a medium-severity vulnerability in Openclaw with a CVSS 3.x base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.8)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8408
Weakness: CWE-79
Affected product: Openclaw
Published: 2026-02-20
Last modified: 2026-06-17

Description

OpenClaw is a personal AI assistant. Prior to version 2026.2.15, a atored XSS issue in the OpenClaw Control UI when rendering assistant identity (name/avatar) into an inline `<script>` tag without script-context-safe escaping. A crafted value containing `</script>` could break out of the script tag and execute attacker-controlled JavaScript in the Control UI origin. Version 2026.2.15 removed inline script injection and serve bootstrap config from a JSON endpoint and added a restrictive Content Security Policy for the Control UI (`script-src 'self'`, no inline scripts).

Frequently asked questions

What is CVE-2026-27009?: OpenClaw is a personal AI assistant. Prior to version 2026.2.15, a atored XSS issue in the OpenClaw Control UI when rendering assistant identity (name/avatar) into an inline `<script>` tag without script-context-safe escaping. A crafted value containing `</script>` could break out of the script tag and execute attacker-controlled JavaScript in the Control UI origin. Version 2026.2.15 removed inline script injection and serve bootstrap config from a JSON endpoint and added a restrictive Content Security Policy for the Control UI (`script-src 'self'`, no inline scripts).
How severe is CVE-2026-27009?: CVE-2026-27009 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-27009 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27009?: CVE-2026-27009 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27009?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27009 have an EU (EUVD) identifier?: Yes. CVE-2026-27009 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8408.
When was CVE-2026-27009 published?: CVE-2026-27009 was published on 2026-02-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

More vulnerabilities in Openclaw

CVE-2026-41329 — Critical (CVSS 9.9): OpenClaw before 2026.3.31 contains a sandbox bypass vulnerability allowing attackers to escalate privileges via…
CVE-2026-33579 — Critical (CVSS 9.9): OpenClaw before 2026.3.28 contains a privilege escalation vulnerability in the /pair approve command path that fails to…
CVE-2026-32922 — Critical (CVSS 9.9): OpenClaw before 2026.3.11 contains a privilege escalation vulnerability in device.token.rotate that allows callers with…
CVE-2026-22172 — Critical (CVSS 9.9): OpenClaw versions prior to 2026.3.12 contain an authorization bypass vulnerability in the WebSocket connect path that…
CVE-2026-28466 — Critical (CVSS 9.9): OpenClaw versions prior to 2026.2.14 contain a vulnerability in the gateway in which it fails to sanitize internal…
CVE-2026-28363 — Critical (CVSS 9.9): In OpenClaw before 2026.2.23, tools.exec.safeBins validation for sort could be bypassed via GNU long-option…

All CVEs affecting Openclaw →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →