AddToAny Share Buttons < 1.7.48 – Admin+ Stored Cross-Site Scripting | CVE 2021-24616

Description

The plugin does not escape its Image URL button setting, which could lead allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Proof of Concept

Add the following payload in the Universal Button > Image URL settings: " onerror=alert(/XSS/) "

The XSS will be triggered in all frontend posts

Affects Plugins

add-to-any

Fixed in 1.7.48

References

CVE

CVE-2021-24616

URL

https://plugins.trac.wordpress.org/changeset/2609928/

Classification

Type

XSS

OWASP top 10

A7: Cross-Site Scripting (XSS)

CWE

CWE-79

CVSS

3.8 (low)

Miscellaneous

Original Researcher

TYM

Submitter

TYM

Verified

Yes

WPVDB ID

04eaf380-c345-425f-8800-142e3f4745a9

Timeline

Publicly Published

2021-08-10 (about 4 years ago)

Added

2021-10-06 (about 4 years ago)

Last Updated

2022-04-09 (about 3 years ago)

Other

Published

Title

Published

2025-03-27

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Published

2013-09-24

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Published

2024-11-18

Title

Contact Form Plugin by Fluent Forms < 5.2.1 - Admin+ Stored XSS

Published

2021-11-15

Title

WP System Log < 1.0.21 - Unauthenticated Stored Cross-Site Scripting

Published

2021-07-19

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PhoneTrack Meu Site Manager <= 0.1 - Authenticated Stored XSS