XSS in Yoast Duplicate Post
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Yoast Duplicate Post — versions 0
Weakness classification (CWE)
References
- wordpress.org/plugins/duplicate-post/ (product)
- www.vulncheck.com/advisories/yoast-duplicate-post-through-stored-cross-site-scr… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-53740?
- CVE-2026-53740 is a medium-severity vulnerability in Yoast Duplicate Post, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-06-10.
- How severe is CVE-2026-53740?
- Medium severity. CVSS v3 base score is 5.4 out of 10.