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critical·Product Based Web Vulnerabilities·Updated Dec 16, 2023

CVE-2020-9757 Scanner

CVE-2020-9757 scanner - Server-Side Template Injection vulnerability in SEOmatic for Craft CMS

Est. Time~30 seconds
Scan TypeSingle Scan
Targetsurl
CostFree
3.4k
Times Used
continuous scan runs
4.7k
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
CVECVE-2020-9757
9.8
CVSS

The SEOmatic component before 3.3.0 for Craft CMS allows Server-Side Template Injection that leads to RCE via malformed data to the metacontainers controller.

Attack Vector
-
Privileges Req.
-
User Interaction
-
Affected
n/aby n/a
n/a
Updated Aug 21, 2026View on NVD →
Detail

SEOmatic is a component specially designed for those who are looking to enhance their SEO performance and optimization on the Craft CMS platform. This plugin is an all-in-one solution to generate XML sitemaps, optimize metadata, ensure that schemas are correct, and manage structured data. In short, its purpose is to make it easier for developers to optimize their websites by streamlining the SEO process. 

However, there's a vulnerability that was recently discovered in this component known as CVE-2020-9757, which could potentially lead to a server-side template injection attack. This happens when the component is given malformed data, which affects the metacontainers controller, allowing the attacker to execute remote code. 

When exploited, this vulnerability can lead to the full compromise of a website's server, which can give hackers the opportunity to transfer, modify, or delete sensitive data. Moreover, this type of attack can spread to all devices or networks connected to the affected server, making it easier for hackers to steal more valuable information. This can severely affect the reputation and integrity of a company and can lead to the legal and financial implications. 

Finally, those who are concerned about the security of their digital assets can easily and quickly learn about vulnerabilities by using the pro features of the s4e.io platform. With the comprehensive vulnerability scanning tool and timely reports, developers can stay one step ahead of potential cyber threats and ensure that their websites are well protected at all times, preventing damages from malicious attacks.

 

REFERENCES

Solution Advice

To protect against this vulnerability, developers can take the following precautions:

  • Update all versions of the SEOmatic component to the latest version as soon as possible.
  • Ensure that all third-party plugins and libraries are correctly configured and kept up to date.
  • Regularly check the security bulletin for any vulnerabilities and take necessary actions.
  • Implement a good security policy, including regular backups, access control, network segregation, encryption, and firewall.
  • Run a web application firewall (WAF) that can identify and block possible attacks.

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