What’s Vulnerable › Vulnerabilities

CVE-2026-53841: OpenClaw < 2026.5.12 - Cross-Site Scripting via Unsafe Markdown Links in Exported Session HTML

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-16 · updated 2026-06-17
• Weakness: CWE-83

Description

OpenClaw before 2026.5.12 contains a cross-site scripting vulnerability in exported session HTML that preserves unsafe javascript: and data: links in generated content. Attackers can execute browser-side scripts if a trusted operator opens the exported file and activates a malicious link.

Affected products

• OpenClaw: before 2026.5.12; 2026.5.12-beta1, 2026.5.12-beta2, 2026.5.12-beta3, 2026.5.12-beta4, 2026.5.12-beta5, 2026.5.12-beta6 (+2) — fixed in 2026.5.12

How to fix

Upgrade to a fixed version: OpenClaw 2026.5.12. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/security/advisories/GHSA-w9hf-3pp7-pvxv
• https://www.vulncheck.com/advisories/openclaw-cross-site-scripting-via-unsafe-markdown-links-in-exported-session-html

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