CVE-2023-48300 Embed Privacy missing escaping for show_all attribute in opt-out shortcode

2023-11-2018:16:57

CWE-79

GitHub_M

github.com

cve-2023-48300

embed privacy

stored cross-site scripting

wordpress

opt-out shortcode

input sanitization

output escaping

authenticated attackers

contributor-level permissions

arbitrary web scripts

patch.

CVSS3

6.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

AI Score

5.9

Confidence

High

SSVC

Exploitation

poc

Automatable

Technical Impact

partial

JSON

The Embed Privacy plugin for WordPress that prevents the loading of embedded external content is vulnerable to Stored Cross-Site Scripting via embed_privacy_opt_out shortcode in versions up to, and including, 1.8.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Version 1.8.1 contains a patch for this issue.