CVE-2021-3377

MediumCVSS 6.1/10Last modified Jun 17, 2026

Description

The npm package ansi_up converts ANSI escape codes into HTML. In ansi_up v4, ANSI escape codes can be used to create HTML hyperlinks. Due to insufficient URL sanitization, this feature is affected by a cross-site scripting (XSS) vulnerability. This issue is fixed in v5.0.0.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Mar 5, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-3377: Medium severity, CVSS 6.1 | Vulnix