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.
CVE-2026-53841
MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence
Score 6.1 from GitHub Security Advisory (severity: LOW) published 2026-06-16. a secondary CVSS source baseline 6.1; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(high)
- EPSS
- 8.6%
- KEV
- Not listed
Published
June 16, 2026
Last Modified
June 17, 2026
Advisory Details (2)
Auto-updated Jun 16, 2026Patch available. Sources: github.
generic
OpenClaw < 2026.5.12 - Cross-Site Scripting via Unsafe Markdown Links in Exported Session HTML | Advisories | VulnCheck
https://www.vulncheck.com/advisories/openclaw-cross-site-scripting-via-unsafe-markdown-links-in-exported-session-htmlgithub Patch Available
Exported session HTML could keep unsafe markdown links · Advisory · openclaw/openclaw · GitHub
https://github.com/openclaw/openclaw/security/advisories/GHSA-w9hf-3pp7-pvxvVendor Advisories for CVE-2026-53841(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Frequently asked(5)
What is CVE-2026-53841?
CVE-2026-53841 is a medium vulnerability published on June 16, 2026. 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.
When was CVE-2026-53841 disclosed?
CVE-2026-53841 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53841 actively exploited?
CVE-2026-53841 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53841?
CVE-2026-53841 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-53841?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53841, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-53841
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