What is CVE-2025-13820?

CVE-2025-13820 is a medium-severity vulnerability in Comments, classified under CWE-269 IMPROPER PRIVILEGE MANAGEMENT. CVSS score: 5.3/10. Published 2026-01-01.

How severe is CVE-2025-13820?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Comments

CVE-2025-13820

The Comments WordPress plugin before 7.6.40 does not properly validate user's identity when using the disqus.com provider, allowing an attacker to log in to any user (when knowing their email address) when such user does not have an account on disqus.com yet.

Published 2026-01-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (16.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Comments — versions 0

References

wpscan.com/vulnerability/21bc9b41-a967-42dc-9916-bb993b05709c/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2025-13820?: CVE-2025-13820 is a medium-severity vulnerability in Comments, classified under CWE-269 IMPROPER PRIVILEGE MANAGEMENT. CVSS score: 5.3/10. Published 2026-01-01.
How severe is CVE-2025-13820?: Medium severity. CVSS v3 base score is 5.3 out of 10.