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Description

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 that sets the duplicate_post_show_notice site option, suppressing admin notices network-wide.

PUBLISHED Reserved 2026-06-10 | Published 2026-06-10 | Updated 2026-06-10 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem types

Cross-Site Request Forgery (CSRF)

Product status

Any version
affected

Credits

Scott Moore - VulnCheck finder

References

wordpress.org/plugins/duplicate-post/ (WordPress Plugin Repository) product

www.vulncheck.com/...rgery-via-duplicate-post-dismiss-notice (VulnCheck Advisory: Yoast Duplicate Post through 4.6 Cross-Site Request Forgery via duplicate_post_dismiss_notice) third-party-advisory

cve.org (CVE-2026-53739)

nvd.nist.gov (CVE-2026-53739)

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