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
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- Improper Input Validation in sanitize-html - sanitize-html - CVE-2021-26540
- sanitize-html has incomplete URI scheme validation in that allows javascript: URIs through action, formaction, data, pos - CVE-2026-53606
- Improper Input Validation in is-email - CVE-2021-36716
- sanitize-html Information Exposure vulnerability - CVE-2024-21501


