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CVE-2021-3377

Published: Mar 5, 2021

Modified: Nov 3, 2025

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf

x_refsource_MISC

https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27

x_refsource_MISC

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