medium6.1
CVE-2021-41750
Cross-site Scripting in SEOmatic plugin
Impact
A cross-site scripting (XSS) vulnerability in the SEOmatic plugin 3.4.10 for Craft CMS 3 allows remote attackers to inject arbitrary web script via a GET to /index.php?action=seomatic/file/seo-file-link with url parameter containing the base64 encoded URL of a malicious web page / file and fileName parameter containing an arbitrary filename with the intended content-type to be rendered in the user's browser as the extension.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | nystudio107/craft-seomatic | < 3.4.11 | 3.4.11 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Nystudio107 | Seomatic | Version 3.4.10 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.md
- https://github.com/nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca1981c8
- https://github.com/nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a87b2873
- https://github.com/advisories/GHSA-6hjc-m38h-7jhh
- https://nvd.nist.gov/vuln/detail/CVE-2021-41750