CVE-2018-14716

HIGHNVD 7.5

7.5

A Server Side Template Injection (SSTI) was discovered in the SEOmatic plugin before 3.1.4 for Craft CMS, because requests that don't match any elements incorrectly generate the canonicalUrl, and can lead to execution of Twig code.

CVSS v3: 7.5
EG Score: —
EPSS: 98.3%
KEV: Not listed

Published

August 6, 2018

Last Modified

November 21, 2024

References (12)

cve@mitrehttp://ha.cker.info/exploitation-of-server-side-template-injection-with-craft-cms-plguin-seomatic/
cve@mitrehttps://github.com/nystudio107/craft-seomatic/commit/1e7d1d084ac3a89e7ec70620f2749110508d1ce1
cve@mitrehttps://github.com/nystudio107/craft-seomatic/releases/tag/3.1.4
cve@mitrehttps://twitter.com/nystudio107/status/1021847835418009605
cve@mitrehttps://twitter.com/nystudio107/status/1021855169515057152
cve@mitrehttps://www.exploit-db.com/exploits/45108/
af854a3a-2127-422b-91ae-364da2661108http://ha.cker.info/exploitation-of-server-side-template-injection-with-craft-cms-plguin-seomatic/
af854a3a-2127-422b-91ae-364da2661108https://github.com/nystudio107/craft-seomatic/commit/1e7d1d084ac3a89e7ec70620f2749110508d1ce1
af854a3a-2127-422b-91ae-364da2661108https://github.com/nystudio107/craft-seomatic/releases/tag/3.1.4
af854a3a-2127-422b-91ae-364da2661108https://twitter.com/nystudio107/status/1021847835418009605
af854a3a-2127-422b-91ae-364da2661108https://twitter.com/nystudio107/status/1021855169515057152
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/45108/

Affected Packages

(1 across 1 ecosystem)

Packagist(1)

Package	Vulnerable range	Fixed in	Dependents
nystudio107/craft-seomatic	3.0.0 ... 3.1.3 (52 versions)	3.1.4	—

Weakness Classification(1)

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

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 2× in last 7d / 2× 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 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch

Frequently asked(5)

What is CVE-2018-14716?

CVE-2018-14716 is a high vulnerability published on August 6, 2018. A Server Side Template Injection (SSTI) was discovered in the SEOmatic plugin before 3.1.4 for Craft CMS, because requests that don't match any elements incorrectly generate the canonicalUrl, and can lead to execution of Twig code.

When was CVE-2018-14716 disclosed?

CVE-2018-14716 was first published in the National Vulnerability Database on August 6, 2018, 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-2018-14716 actively exploited?

CVE-2018-14716 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-14716?

CVE-2018-14716 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2018-14716?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-14716, 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

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