CVE-2021-26540

Apostrophe Technologies sanitize-html before 2.3.2 does not properly validate the hostnames set by the "allowedIframeHostnames" option when the "allowIframeRelativeUrls" is set to true, which allows attackers to bypass hostname whitelist for iframe element, related using an src value that starts with "/\\example.com".

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://advisory.checkmarx.net/advisory/CX-2021-4309	Exploit Patch Third Party Advisory
https://github.com/apostrophecms/sanitize-html/blob/main/CHANGELOG.md#232-2021-01-26	Release Notes Third Party Advisory
https://github.com/apostrophecms/sanitize-html/pull/460	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apostrophecms:sanitize-html:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2021-02-08 17:15

Updated : 2024-02-28 18:08

NVD link : CVE-2021-26540

Mitre link : CVE-2021-26540

CVE.ORG link : CVE-2021-26540

JSON object : View

Products Affected

apostrophecms

sanitize-html

CWE

NVD-CWE-noinfo

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