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THREAT OPS › Threat News › [NVD] CVE-2026-4519 (LOW 3.3) — The webbrowser.open() API would accept leading dashes in the URL which could be handled as command line options for certain web browsers. New behavior rejects leading dashes. Users are recommended to sanitize URLs prior to passing to webbrowser.open().

[NVD] CVE-2026-4519 (LOW 3.3) — The webbrowser.open() API would accept leading dashes in the URL which could be handled as command line options for certain web browsers. New behavior rejects leading dashes. Users are recommended to sanitize URLs prior to passing to webbrowser.open().

lownvdPublished 2026-03-20

CVE-2026-4519 CVSS: 3.3 LOW Published: 2026-03-20T15:16:24.057

The webbrowser.open() API would accept leading dashes in the URL which could be handled as command line options for certain web browsers. New behavior rejects leading dashes. Users are recommended to sanitize URLs prior to passing to webbrowser.open().

Indicators of compromise

CVE-2026-4519cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-4519