CVE-2020-12790

HIGHNVD 7.57.5—

7.5

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.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 64.2%
KEV: Not listed

Published

May 11, 2020

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://github.com/nystudio107/craft-seomatic/blob/v3/CHANGELOG.md#3249---20200324
cve@mitrehttps://github.com/nystudio107/craft-seomatic/commit/82f4a25b28fd622393da6592dc9e5ccee7fc5be3#diff-52fd042c50432133a00a8f840f4a6165
cve@mitrehttps://github.com/nystudio107/craft-seomatic/releases/tag/3.2.49
cve@mitrehttps://isec.pl/en/vulnerabilities/isec-0028-seomatic-ssti-23032020.txt
af854a3a-2127-422b-91ae-364da2661108https://github.com/nystudio107/craft-seomatic/blob/v3/CHANGELOG.md#3249---20200324
af854a3a-2127-422b-91ae-364da2661108https://github.com/nystudio107/craft-seomatic/commit/82f4a25b28fd622393da6592dc9e5ccee7fc5be3#diff-52fd042c50432133a00a8f840f4a6165
af854a3a-2127-422b-91ae-364da2661108https://github.com/nystudio107/craft-seomatic/releases/tag/3.2.49
af854a3a-2127-422b-91ae-364da2661108https://isec.pl/en/vulnerabilities/isec-0028-seomatic-ssti-23032020.txt

Affected Packages

(1 across 1 ecosystem)

Packagist(1)

Package	Vulnerable range	Fixed in	Dependents
nystudio107/craft-seomatic	3.0.0 ... 3.2.9 (147 versions)	3.2.49	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Data Freshness Timeline

(refreshed 6× in last 7d / 6× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 03:44 UTCEG score recompute
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2020-12790?

CVE-2020-12790 is a high vulnerability published on May 11, 2020. 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.

When was CVE-2020-12790 disclosed?

CVE-2020-12790 was first published in the National Vulnerability Database on May 11, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-12790 actively exploited?

CVE-2020-12790 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 64.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-12790?

CVE-2020-12790 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2020-12790?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-12790, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-12790

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