CVE-2021-41749
CRITICAL NUCLEInystudio107 SEOmatic < 3.4.11 - Unauthenticated Server-Side Template Injection
Title source: llmExploitation Summary
CVE-2021-41749 has a Nuclei detection template available — see the Nuclei card below for the Shodan/FOFA recon queries.
Description
In the SEOmatic plugin up to 3.4.11 for Craft CMS 3, it is possible for unauthenticated attackers to perform a Server-Side Template Injection, allowing for remote code execution.
Nuclei Templates (1)
CraftCMS SEOmatic - Server-Side Template Injection
CRITICALVERIFIEDby iamnoooob,ritikchaddha
Shodan:
X-Powered-By: Craft CMS html:"SEOmatic" || x-powered-by: craft cms || x-powered-by: craft cms html:"seomatic"
References (2)
Core 2
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.md
Patch, Third Party Advisory x_refsource_misc
https://github.com/nystudio107/craft-seomatic/commit/3fee7d50147cdf3f999cfc1e04cbc3fb3d9f2f7d
Scores
CVSS v3
9.8
EPSS
0.1725
EPSS Percentile
96.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-94
Status
published
Products (2)
nystudio107/craft-seomatic
0 - 3.4.11Packagist
nystudio107/seomatic
< 3.4.11
Published
Jun 12, 2022
Tracked Since
Feb 18, 2026