7.2

CVE-2026-18406: brainstormforce sureforms – contact form builder, ai forms, payment form, survey & quiz Cross-site Scripting

CVSS: 7.2v3.1HighDeferred
Published 05-09-2026Last modified 07-09-2026
Open JSON

Vulnerability summary

CVE-2026-18406 is a high (CVSS 7.2) Cross-site Scripting vulnerability in brainstormforce sureforms – contact form builder, ai forms, payment form, survey & quiz. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 19.8% of scored vulnerabilities. Fixed in 2.12.3.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.2/10
010
High · v3.1 (CVE.org)
EPSS score
0.29%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-09-2026
    PublishedVulnerability first disclosed.
  2. 07-09-2026
    Last modifiedVulnerability information updated.

Description

The SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Text Field Entity-Encoded Payload in all versions up to, and including, 2.12.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers 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

0.29%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

0.00 pp

From 0.29% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.29%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Brainstormforce1 product
Wordpress1 product
  • sureforms≤ 2.12.2 (fixed in 2.12.3)

2 vendors · 2 products

References

10 links