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CVE-2021-41750

22
FAUCET Score

CVE-2021-41750 is a medium-severity cross-site scripting (XSS) vulnerability affecting version 3.4.10 of the SEOmatic plugin for Craft CMS 3. An unauthenticated attacker can inject arbitrary web scripts by manipulating the 'url' and 'fileName' parameters in a GET request to a specific endpoint. This attack requires user interaction (UI:R) but has low impact on confidentiality and integrity (C:L, I:L). There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.4.10CPE matchmatch criteria
cpe:2.3:a:nystudio107:seomatic:3.4.10:*:*:*:*:craft_cms:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 72nd percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: nystudio107/craft-seomaticFixed in: 3.4.11
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-6hjc-m38h-7jhhmedium

Cross-site Scripting in SEOmatic plugin

Jun 13, 2022

References

github.com / nystudio107/craft-seomatic/blob/develop/CHANGELOG.md
Release NotesThird Party Advisory
github.com / nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca1981c8
PatchThird Party Advisory
github.com / nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a87b2873
PatchThird Party Advisory