CVE-2021-41750

Medium

Description

A cross-site scripting (XSS) vulnerability in the SEOmatic plugin 3.4.10 for Craft CMS 3 allows remote attackers to inject arbitrary web script via a GET to /index.php?action=seomatic/file/seo-file-link with url parameter containing the base64 encoded URL of a malicious web page / file and fileName parameter containing an arbitrary filename with the intended content-type to be rendered in the user's browser as the extension.

SeverityMedium
CVSS6.1
Exploit probability—
ProductNystudio107 Seomatic
PublishedJun 12, 2022
First seenJun 12, 2022

How to fix

Update
  • nystudio107/craft-seomatic3.4.11 or later

Affected products

ProductAffected versionsFixed in
nystudio107 seomatic3.4.10—
nystudio107/craft-seomaticPackagistv < 3.4.113.4.11

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CVE-2021-41750 · Nystudio107 Seomatic · Dark Radar