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CVE-2021-38143

22
FAUCET Score

CVE-2021-38143 is a stored Cross-Site Scripting (XSS) vulnerability affecting Form Tools through version 3.0.20. It allows a malicious customer to inject XSS payloads into their name and last name fields, which are triggered in the administrator panel when viewing the client list. This medium-severity vulnerability (CVSS 6.1) has a low attack complexity and can lead to the extraction of the administrator's PHPSESSID cookie, potentially compromising their session. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.20CPE matchmatch criteria
cpe:2.3:a:formtools:core:*:*:*:*:*:*:*:*

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
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 81st percentile among its peer group of 26,236 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

Remediation records are not available for this CVE.

References

bernardofsr.github.io / blog/2021/form-tools
ExploitThird Party Advisory
github.com / bernardofsr/CVEs-With-PoC/blob/main/PoCs/Form%20Tools/README.md
ExploitThird Party Advisory
github.com / formtools/core
ProductThird Party Advisory
formtools.org
ProductVendor Advisory