Improper Input Validation in sanitize-html

Description

Apostrophe Technologies sanitize-html before 2.3.1 does not properly handle internationalized domain name (IDN) which could allow an attacker to bypass hostname whitelist validation set by the “allowedIframeHostnames” option.

Recommendation

Update the sanitize-html package to the latest compatible version. Followings are version details:

• Affected version(s): < 2.3.1
• Patched version(s): 2.3.1

References

• GHSA-rjqq-98f6-6j3r
• advisory.checkmarx.net
• CVE-2021-26539
• CWE-20
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Improper Input Validation in sanitize-html - sanitize-html - CVE-2021-26540
• Apostrophe has default XSS via `xmp` raw-text passthrough in `sanitize-html` - CVE-2026-44990
• Cross-Site Scripting in sanitize-html - sanitize-html - GHSA-3j7m-hmh3-9jmp - CVE-2016-1000237
• Improper Certificate Validation in xmlhttprequest-ssl - CVE-2021-31597

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Tags:

npm

sanitize-html