What is CVE-2026-53841?

CVE-2026-53841 is a medium-severity vulnerability in Openclaw, classified under Improper Neutralization of Script in Attributes in a Web Page. CVSS score: 6.1/10. Published 2026-06-16.

How severe is CVE-2026-53841?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Openclaw

CVE-2026-53841

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 2026-06-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (16.6th percentile), scored 2026-09-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Openclaw — versions 0, 2026.5.12

Weakness classification (CWE)

CWE-83 — Improper Neutralization of Script in Attributes in a Web Page

References

github.com/openclaw/openclaw/security/advisories/GHSA-w9hf-3pp7-pvxv (vendor-advisory, Vendor Advisory)
www.vulncheck.com/advisories/openclaw-cross-site-scripting-via-unsafe-markdown-… (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-53841?: CVE-2026-53841 is a medium-severity vulnerability in Openclaw, classified under Improper Neutralization of Script in Attributes in a Web Page. CVSS score: 6.1/10. Published 2026-06-16.
How severe is CVE-2026-53841?: Medium severity. CVSS v3 base score is 6.1 out of 10.