CVE-2021-41749

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

In the SEOmatic plugin up to 3.4.11 for Craft CMS 3, it is possible for unauthenticated attackers to perform a Server-Side Template Injection, allowing for remote code execution.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-94

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/3fee7d50147cdf3f999cfc1e04cbc3fb3d9f2f7dPatch, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.mdRelease Notes, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/commit/3fee7d50147cdf3f999cfc1e04cbc3fb3d9f2f7dPatch, Third Party Advisory

Timeline

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

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