XSS in Anssilaitila Contact List – Online Staff Directory & Address Book

CVE-2026-3516

The Contact List plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the '_cl_map_iframe' parameter in all versions up to, and including, 3.0.18. This is due to insufficient input sanitization and output escaping when han…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (7.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-3516?
CVE-2026-3516 is a medium-severity vulnerability in Anssilaitila Contact List – Online Staff Directory & Address Book, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-03-20.
How severe is CVE-2026-3516?
Medium severity. CVSS v3 base score is 6.4 out of 10.
Is CVE-2026-3516 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.