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CVE-2021-26539

Good to know:

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Date: February 8, 2021

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.

Language: JS

Severity Score

Related Resources (7)

https://github.com/apostrophecms/sanitize-html/blob/main/CHANGELOG.md#231-2021-01-22
https://github.com/apostrophecms/sanitize-html/commit/bdf7836ef8f0e5b21f9a1aab0623ae8fcd09c1da
https://github.com/apostrophecms/sanitize-html
https://advisory.checkmarx.net/advisory/CX-2021-4308
https://github.com/apostrophecms/sanitize-html/pull/458
https://nvd.nist.gov/vuln/detail/CVE-2021-26539
https://www.mend.io/vulnerability-database/CVE-2021-26539

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Insufficient Information

NVD-CWE-noinfo

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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