6.4

CVE-2024-13403: WPForms Lite <= 1.9.3.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via fieldHTML Parameter

Analyzed
Published 04-02-2025Last modified 08-04-2026

Vulnerability summary

CVE-2024-13403 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in smub wpforms – easy form builder for wordpress – contact forms, payment forms, surveys, & more. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.4% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.39%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 04-02-2025
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    Last modifiedVulnerability information updated.

Description

The WPForms – Easy Form Builder for WordPress – Contact Forms, Payment Forms, Surveys, & More plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘fieldHTML’ parameter in all versions up to, and including, 1.9.3.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.39% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Smub1 product
Wordpress1 product
  • wpforms-lite≤ 1.9.3.1 (fixed in 1.9.3.2)
Wpforms1 product

3 vendors · 3 products

References

5 links