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VULNERABILITIES

CVE-2021-3377 Details

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.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf CVEExploitThird Party Advisory
https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27 CVEPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20241108-0002/ CVE
https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf [email protected]ExploitThird Party Advisory
https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27 [email protected]PatchThird Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

ProductVersions
ansi up project ansi up
< 5.0.0

CPE

  • cpe:2.3:a:ansi_up_project:ansi_up:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-3377
NVD Published Date:
Mar 5, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]