CVE-2021-41750

MediumCVSS 6.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

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

References

https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.mdRelease Notes, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca1981c8Patch, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a87b2873Patch, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.mdRelease Notes, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca1981c8Patch, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a87b2873Patch, Third Party Advisory

Timeline

Published: Jun 12, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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