SEOmatic plugin for Craft CMS SSTI Vulnerability
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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | nystudio107/craft-seomatic | < 3.1.4 | 3.1.4 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-14716
- https://github.com/nystudio107/craft-seomatic/commit/1e7d1d084ac3a89e7ec70620f2749110508d1ce1
- https://github.com/nystudio107/craft-seomatic
- https://github.com/nystudio107/craft-seomatic/releases/tag/3.1.4
- https://twitter.com/nystudio107/status/1021847835418009605
- https://twitter.com/nystudio107/status/1021855169515057152
- https://www.exploit-db.com/exploits/45108
- http://ha.cker.info/exploitation-of-server-side-template-injection-with-craft-cms-plguin-seomatic
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-94- Platform
- Composer
- Package
nystudio107/craft-seomatic- Disclosed
- 13.05.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-6j9m-rp7m-3gfg - CC BY 4.0
Vulnerability history: nystudio107/craft-seomatic
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 6
- First → latest
- 03.2022 06.2022
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 3
- Medium 1
Disclosures per year
- 2022: 6
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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SEOmatic plugin for Craft CMS SSTI Vulnerability this entry
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