CVE-2021-24241

The Advanced Custom Fields Pro WordPress plugin before 5.9.1 did not properly escape the generated update URL when outputting it in an attribute, leading to a reflected Cross-Site Scripting issue in the update settings page.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
WPScanCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 69%
VendorProductVersion
advancedcustomfieldsadvanced_custom_fields
𝑥
< 5.9.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin/issues/1
https://wpscan.com/vulnerability/d1e9c995-37bd-4952-b88e-945e02e3c83f
https://www.advancedcustomfields.com/blog/acf-5-9-1-release/
https://github.com/jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin/issues/1
https://wpscan.com/vulnerability/d1e9c995-37bd-4952-b88e-945e02e3c83f
https://www.advancedcustomfields.com/blog/acf-5-9-1-release/