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CVE-2026-6658

🗓️ 30 Jun 2026 05:21:51Reported by redhat.comType 
redhatcve
 redhatcve🔗 access.redhat.com👁 6 Views

A flaw was found in nbconvert. This vulnerability allows a remote attacker to perform Cross-site Scripting (XSS) by injecting arbitrary HTML or JavaScript code. This occurs due to unsanitized text/vnd.mermaid output in HTML exports, where the data...

Related
Refs
ReporterTitlePublishedViews
Family
Huntr		XSS via unsanitized `text/vnd.mermaid` output in nbconvert HTML export
28 Mar 202609:40
–huntr
ATTACKERKB		CVE-2026-6658
26 Jun 202609:40
–attackerkb
CVE		CVE-2026-6658
26 Jun 202609:40
–cve
Cvelist		CVE-2026-6658 Cross-site Scripting (XSS) in jupyter/nbconvert
26 Jun 202609:40
–cvelist
Debian CVE		CVE-2026-6658
26 Jun 202609:40
–debiancve
EUVD		EUVD-2026-39642
26 Jun 202609:40
–euvd
NVD		CVE-2026-6658
26 Jun 202610:16
–nvd
OSV		DEBIAN-CVE-2026-6658
26 Jun 202610:16
–osv
OSV		UBUNTU-CVE-2026-6658
26 Jun 202610:16
–osv
Positive Technologies		PT-2026-52688
26 Jun 202600:00
–ptsecurity
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30 Jun 2026 05:21Current
6.5Medium risk
Vulners AI Score6.5
CVSS 35.4
CVSS 3.15.4
EPSS0.00134
SSVC
6