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Description

Yoast Duplicate Post through 4.6 inserts an unescaped post title and permalink into the Classic Editor scheduled republish notice. Attackers can schedule a republish copy with a crafted title to execute script when an administrator views the resulting notice.

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:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Any version
affected

Credits

Scott Moore - VulnCheck finder

References

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

www.vulncheck.com/...cripting-via-scheduled-republish-notice (VulnCheck Advisory: Yoast Duplicate Post through 4.6 Stored Cross-Site Scripting via Scheduled Republish Notice) third-party-advisory

cve.org (CVE-2026-53740)

nvd.nist.gov (CVE-2026-53740)

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