Vulnerability · Published Jun 12, 2022 · Assigned by mitre

CVE-2021-41750

Medium 6.1

In plain English

A medium-severity security flaw in the nystudio107/craft-seomatic package (Packagist). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.1Medium

Exploit odds (30 days)1.1%top 33.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	nystudio107/craft-seomatic	3.4.11	GHSA-6hjc-m38h-7jhh

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.md x_refsource_MISC
https://github.com/nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a87b2873 x_refsource_MISC
https://github.com/nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca1981c8 x_refsource_MISC