XSS in Openclaw
CVE-2026-32040
OpenClaw versions prior to 2026.2.23 contain an html injection vulnerability in the HTML session exporter that allows attackers to execute arbitrary javascript by injecting malicious mimeType values in image content blocks. Attackers can craft session entries with specially crafted mimeType attributes that break out of the img src data-URL context to achieve cross-site scripting when exported HTML is opened.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.001 (4.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Openclaw — versions 0, 2026.2.23
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, vendor-advisory, Vendor Advisory, third-party-advisory)
- disclosure@vulncheck.com (issue-tracking, product, Issue Tracking)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-32040?
- CVE-2026-32040 is a medium-severity vulnerability in Openclaw, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-03-19.
- How severe is CVE-2026-32040?
- Medium severity. CVSS v3 base score is 4.6 out of 10.