CVE-2021-26539

MEDIUM

Apostrophe Technologies sanitize-html <2.3.1 - Info Disclosure

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/apostrophecms/sanitize-html/pull/458
Exploit, Third Party Advisory x_refsource_misc
https://advisory.checkmarx.net/advisory/CX-2021-4308

Scores

CVSS v3 5.3
EPSS 0.0029
EPSS Percentile 52.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Details

Status published
Products (2)
apostrophecms/sanitize-html < 2.3.1
npm/sanitize-html 0 - 2.3.1npm
Published Feb 08, 2021
Tracked Since Feb 18, 2026