CVE-2021-26539: Origin Validation Error

February 8, 2021 (updated April 26, 2022)

sanitize-html does not properly handle internationalized domain name (IDN) which could allow an attacker to bypass the hostname allowlist validation set by the allowedIframeHostnames option.

References

nvd.nist.gov/vuln/detail/CVE-2021-26539

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