PoC Index

CVE-2021-3377

MEDIUM 6.1EPSS 8.0%

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.

CVSS v3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v2.0
4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS
8.00% chance of exploitation in the next 30 days, 94th percentile
Nuclei
medium · CWE-79
Published
2021-03-05
Updated
2025-11-03

Nuclei templates (1)

References

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