What is CVE-2018-18069?

CVE-2018-18069 is a medium-severity vulnerability in Wpml, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-10-08.

How severe is CVE-2018-18069?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2018-18069 known to be exploited?

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

XSS in Wpml

CVE-2018-18069

process_forms in the WPML (aka sitepress-multilingual-cms) plugin through 3.6.3 for WordPress has XSS via any locale_file_name_ parameter (such as locale_file_name_en) in an authenticated theme-localization.php request to wp-admin/admin.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-10-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.132 (96.2th percentile), scored 2026-09-29.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.132 · newest: 0.132 · change: 0.000

Affected products

Wpml

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

0x62626262.wordpress.com/2018/10/08/sitepress-multilingual-cms-plugin-unauthent… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-18069?: CVE-2018-18069 is a medium-severity vulnerability in Wpml, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-10-08.
How severe is CVE-2018-18069?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2018-18069 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.