XSS in Nystudio107 Seomatic
CVE-2021-41750
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.011 (64.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Nystudio107 Seomatic — versions 3.4.10
Weakness classification (CWE)
References
- github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.md (Third Party Advisory, Release Notes)
- github.com/nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a8… (Patch, Third Party Advisory)
- github.com/nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41750?
- CVE-2021-41750 is a medium-severity vulnerability in Nystudio107 Seomatic, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-06-12.
- How severe is CVE-2021-41750?
- Medium severity. CVSS v3 base score is 6.1 out of 10.