CVE-2020-12790

Name: CVE-2020-12790
Creator: NVD / NIST
Published: 2020-05-11T19:15:11.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.19%

Last modified Jun 17, 2026

CVE-2020-12790 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In the SEOmatic plugin before 3.2.49 for Craft CMS, helpers/DynamicMeta.php does not properly sanitize the URL. This leads to Server-Side Template Injection and credentials disclosure via a crafted Twig template after a semicolon.. EPSS estimates a 2.19% chance of exploitation in the next 30 days.

Description

In the SEOmatic plugin before 3.2.49 for Craft CMS, helpers/DynamicMeta.php does not properly sanitize the URL. This leads to Server-Side Template Injection and credentials disclosure via a crafted Twig template after a semicolon.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.19%

80.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Nystudio107	Seomatic	< 3.2.49

References

https://github.com/nystudio107/craft-seomatic/blob/v3/CHANGELOG.md#3249---20200324Release Notes, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/commit/82f4a25b28fd622393da6592dc9e5ccee7fc5be3#diff-52fd042c50432133a00a8f840f4a6165Patch, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/releases/tag/3.2.49Release Notes, Third Party Advisory
https://isec.pl/en/vulnerabilities/isec-0028-seomatic-ssti-23032020.txtExploit, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/blob/v3/CHANGELOG.md#3249---20200324Release Notes, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/commit/82f4a25b28fd622393da6592dc9e5ccee7fc5be3#diff-52fd042c50432133a00a8f840f4a6165Patch, Third Party Advisory
https://github.com/nystudio107/craft-seomatic/releases/tag/3.2.49Release Notes, Third Party Advisory
https://isec.pl/en/vulnerabilities/isec-0028-seomatic-ssti-23032020.txtExploit, Third Party Advisory

Timeline

Published: May 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12790?

How severe is CVE-2020-12790?

CVE-2020-12790 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.19% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12790?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12790?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST