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CVE-2026-104477

🗓️ 02 Oct 2026 23:28:47Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 30 Views

XSS in Showdown makehtml link and image subparsers via unescaped double quotes.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-104477
3 Oct 202601:27
–circl
cvelist
Cvelist
CVE-2026-104477 Showdown through 2.1.0 XSS via unescaped quote in href and src attributes
2 Oct 202623:28
–cvelist
euvd
EUVD
EUVD-2026-91853
3 Oct 202600:31
–euvd
mend
Mend
CVE-2026-104477
2 Oct 202623:28
–mend
nvd
NVD
CVE-2026-104477
3 Oct 202600:16
–nvd
ptsecurity
Positive Technologies
PT-2026-104459
2 Oct 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-104477: Improper Neutralization of Input During Web Page Generation
3 Oct 202600:00
–rapid7
redhatcve
RedhatCVE
CVE-2026-104477
3 Oct 202600:54
–redhatcve
snyk
Snyk
Cross-site Scripting (XSS)
3 Oct 202600:23
–snyk
snyk
Snyk
Cross-site Scripting (XSS)
3 Oct 202600:23
–snyk
Rows per page
Vulners
CNA
Node
showdownjsshowdownRange0–2.1.0
[
  {
    "vendor": "showdownjs",
    "product": "showdown",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:npm/showdown",
    "versions": [
      {
        "version": "0",
        "status": "affected",
        "versionType": "semver",
        "lessThanOrEqual": "2.1.0"
      }
    ]
  }
]

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06 Oct 2026 16:00Current
6Medium risk
Vulners AI Score6
CVSS 45.3
CVSS 3.16.1
EPSS0.00187
SSVC
30