CVE Vulnerabilities

CVE-2021-26539

Published: Feb 08, 2021 | Modified: Jun 17, 2026
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Ubuntu

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.

Affected Software

NameVendorStart VersionEnd Version
Sanitize-htmlApostrophecms*2.3.1 (excluding)
Red Hat OpenShift Container Platform 4.7RedHatopenshift4/ose-console:v4.7.0-202102130115.p0*
Red Hat OpenShift Container Platform 4.8RedHatopenshift4/ose-thanos-rhel8:v4.8.0-202106291913.p0.git.c358e96.assembly.stream*
Red Hat OpenShift Container Platform 4.9RedHatopenshift4/ose-prometheus:v4.9.0-202109302016.p0.git.3197fa7.assembly.stream*

References