What is CVE-2024-31857?

CVE-2024-31857 is a medium-severity vulnerability in Incsub Forminator, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2024-04-23.

How severe is CVE-2024-31857?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2024-31857 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Incsub Forminator

CVE-2024-31857

Forminator prior to 1.15.4 contains a cross-site scripting vulnerability. If this vulnerability is exploited, a remote attacker may obtain user information etc. and alter the page contents on the user's web browser.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-04-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Incsub Forminator
Wpmu Dev Forminator — versions prior to 1.15.4

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

wordpress.org/plugins/forminator/ (Product)
wpmudev.com/ (Product)
jvn.jp/en/jp/JVN50132400/ (Third Party Advisory)

Frequently asked questions

What is CVE-2024-31857?: CVE-2024-31857 is a medium-severity vulnerability in Incsub Forminator, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2024-04-23.
How severe is CVE-2024-31857?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2024-31857 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.