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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-4303

21
FAUCET Score

CVE-2021-4303 is a cross-site scripting (XSS) vulnerability found in the testftp function of the install/install_form.js.php file within the Installer component of shannah Xataface versions up to 2.x. This vulnerability has a CVSS score of 6.1 (Medium) and requires user interaction, though it can be launched remotely. Exploitation is considered difficult, and the Installer component is disabled by default, mitigating some risk. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.0.0CPE matchmatch criteria
cpe:2.3:a:xataface_project:xataface:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

2.0LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
0.5
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 43rd 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: xataface/xatafaceFixed in: 3.0.0
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-64wv-c7jw-jw2qmedium

Xataface vulnerable to Cross-site Scripting

Jan 5, 2023

References

github.com / shannah/xataface/commit/94143a4299e386f33bf582139cd4702571d93bde
PatchThird Party Advisory
github.com / shannah/xataface/releases/tag/3.0.0
Third Party Advisory
vuldb.com
Permissions RequiredThird Party Advisory
vuldb.com
Permissions RequiredThird Party Advisory