CVE-2026-59711Published

showdown - Cross-Site Scripting via Unescaped Metadata Title in completeHTMLDocument

cve-program · CVE-2026-59711

Published

showdown

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "showdown",
                    "product": "showdown",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:npm/showdown",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "2.1.0"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-41948

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jul 6, 2026, 9:00:38 PM

dateUpdated: Jul 7, 2026, 2:06:55 PM

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-59711

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-79

Original publisher date fields

published: 2026-07-06T21:16:58.660

lastModified: 2026-10-25T20:10:00.147

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-cr32-g25g-vxjj

Published

showdown

npm

SEMVER · introduced 0 → last_affected 2.1.0

Original source record · Cite this exact observation · Complete original publisher JSON