WordPress CformsII plugin <= 15.1.3 - Cross Site Scripting (XSS) vulnerability

published 2026-06-15 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-36925

cvss: 7.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits: 0; none known

Unauthenticated Cross Site Scripting (XSS) in CformsII <= 15.1.3 versions.

Patch / fix

fixed in 1

bgermann CformsII 15.1.4

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 4 mo ago (2026-06-16)

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Affected products

bgermann CformsII

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/plugin/cforms2/vulnerability/wordpress-cformsii-plugin-15-1-3-cross-site-scripting-xss-vul
vdb-entry

Sources

CVE List CVE-2026-39435
NVD CVE-2026-39435

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary