In short
- CVE-2021-26539 is a MEDIUM (CVSS 5.3) vulnerability affecting sanitize-html (apostrophecms), sanitize-html.
- Chance of exploitation in the next 30 days (EPSS): 2.0%, higher than 80.3% of all vulnerabilities.
- Fix: update to 2.3.1 or later.
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.
NVD 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.
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