Server-side Template Injection in nystudio107/craft-seomatic
A Server-side Template Injection (SSTI) vulnerability exists in Nystudio107 Seomatic prior to 3.4.12 in src/helpers/UrlHelper.php via the host header.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | nystudio107/craft-seomatic | < 3.4.12 | 3.4.12 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-94- Platform
- Composer
- Package
nystudio107/craft-seomatic- Disclosed
- 12.03.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-m3xv-x3ph-mq22 - 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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Server-side Template Injection in nystudio107/craft-seomatic this entry
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