CVE-2021-41749

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 85.70% Top 5%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.md third party advisory release notes
https://github.com/nystudio107/craft-seomatic/commit/3fee7d50147cdf3f999cfc1e04cbc3fb3d9f2f7d third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-41749?
CVE-2021-41749 has been scored as a critical severity vulnerability.
How to fix CVE-2021-41749?
To fix CVE-2021-41749, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-41749 being actively exploited in the wild?
It is possible that CVE-2021-41749 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~86% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.