What is CVE-2026-53739?

CVE-2026-53739 is a medium-severity vulnerability in Yoast Duplicate Post, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-06-10.

How severe is CVE-2026-53739?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CSRF in Yoast Duplicate Post

CVE-2026-53739

Yoast Duplicate Post through 4.6 contains a cross-site request forgery vulnerability in the duplicate_post_dismiss_notice handler, which verifies no nonce or capability. Attackers can trick any authenticated user into sending a request tha…

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.001 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Yoast Duplicate Post — versions 0

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-53739?: CVE-2026-53739 is a medium-severity vulnerability in Yoast Duplicate Post, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-06-10.
How severe is CVE-2026-53739?: Medium severity. CVSS v3 base score is 4.3 out of 10.