CVE-2021-44618 Information

Description

A Server-side Template Injection (SSTI) vulnerability exists in Nystudio107 Seomatic 3.4.12 in src/helpers/UrlHelper.php via the host header.

CVSS Vector

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

Reference

https://github.com/nystudio107/craft-seomatic/releases/tag/3.4.12 https://github.com/nystudio107/craft-seomatic/commit/0c5c0c0e0cb61000d12ec55ebf174745a5bf6469

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8

CNNVD-202510-4130 (Published: 2025-10-30)

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