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CVE-2026-59711 showdown - Cross-Site Scripting via Unescaped Metadata Title in completeHTMLDocument

🗓️ 06 Jul 2026 21:00:38Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 63 Views

CVE-2026-59711: Showdown XSS via unescaped metadata title in completeHTMLDocument.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-59711
6 Jul 202621:00
–attackerkb
cgr
Chainguard
CVE-2026-59711 vulnerabilities
20 Aug 202602:18
–cgr
cve
CVE
CVE-2026-59711
6 Jul 202621:00
–cve
euvd
EUVD
EUVD-2026-41948
6 Jul 202621:00
–euvd
github
Github Security Blog
showdown metadata title handling allows cross-site scripting
6 Jul 202621:30
–github
mend
Mend
CVE-2026-59711
6 Jul 202621:00
–mend
nvd
NVD
CVE-2026-59711
6 Jul 202621:16
–nvd
osv_cga
osv_cga
CGA-274M-JX94-R8GF
8 Aug 202612:35
–osv_cga
osv_cga
osv_cga
CGA-5JQX-W4CG-C846
8 Aug 202612:35
–osv_cga
osv_cga
osv_cga
CGA-8H7C-V237-939X
8 Aug 202611:38
–osv_cga
Rows per page
[
  {
    "vendor": "showdown",
    "product": "showdown",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:npm/showdown",
    "versions": [
      {
        "version": "0",
        "status": "affected",
        "versionType": "semver",
        "lessThanOrEqual": "2.1.0"
      }
    ]
  }
]

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07 Jul 2026 13:48Current
CVSS 45.3
CVSS 3.16.1
EPSS0.00327
SSVC
63