Medium severity6.1NVD Advisory· Published Jun 12, 2022· Updated Jun 17, 2026
CVE-2021-41750
CVE-2021-41750
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
nystudio107/craft-seomaticPackagist | < 3.4.11 | 3.4.11 |
Affected products
3- cpe:2.3:a:nystudio107:seomatic:3.4.10:*:*:*:*:craft_cms:*:*
- Craft CMS/SEOmatic plugindescription
Patches
Vulnerability mechanics
References
5- github.com/nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca1981c8nvdPatchThird Party AdvisoryWEB
- github.com/nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a87b2873nvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-6hjc-m38h-7jhhghsaADVISORY
- github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.mdnvdRelease NotesThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2021-41750ghsaADVISORY
News mentions
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