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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.

PUBLISHED Reserved 2026-06-10 | Published 2026-06-16 | Updated 2026-06-16 | Assigner VulnCheck




LOW: 2.1CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

Improper Neutralization of Script in Attributes in a Web Page

Product status

Default status
unaffected

Any version before 2026.5.12
affected

2026.5.12 (semver)
unaffected

Credits

Edward-x (@YLChen-007) reporter

References

github.com/...enclaw/security/advisories/GHSA-w9hf-3pp7-pvxv (GitHub Security Advisory (GHSA-w9hf-3pp7-pvxv)) vendor-advisory

www.vulncheck.com/...markdown-links-in-exported-session-html (VulnCheck Advisory: OpenClaw < 2026.5.12 - Cross-Site Scripting via Unsafe Markdown Links in Exported Session HTML) third-party-advisory

cve.org (CVE-2026-53841)

nvd.nist.gov (CVE-2026-53841)

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