Yoast Duplicate Post through 4.6 Stored Cross-Site Scripting via Scheduled Republish Notice
CVE-2026-53740

5.1MEDIUM

Key Information:

Vendor

Yoast

Status
Yoast Duplicate Post
Vendor
CVE Published:
10 June 2026

What is CVE-2026-53740?

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.

Affected Version(s)

Yoast Duplicate Post 0 <= 4.6

References

https://wordpress.org/plugins/duplicate-post/
product
https://www.vulncheck.com/advisories/yoast-duplicate-post...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Scott Moore - VulnCheck
.