CVE-2026-89424 json
Duplicate Post <= 1.5.6 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'noti_token' Parameter
published 2026-10-01 39 d ago modified 2026-10-01 38 d ago also EUVD-2026-90573
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
The Duplicate Post plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noti_token' parameter in all versions up to, and including, 1.5.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires that the site owner has enabled the plugin's User Level Permissions for the Subscriber role, as this grants access to the i_saw_this_noti AJAX branch needed to deliver the payload.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 38 d ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- inisev Duplicate Post
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/c475c51e-f01d-4698-822f-5b8df999bf6d?source=cve
- plugins.trac.wordpress.org /browser/copy-delete-posts/tags/1.5.6/menu/notifications.php#L53
- plugins.trac.wordpress.org /browser/copy-delete-posts/tags/1.5.6/menu/notifications.php#L84
- plugins.trac.wordpress.org /browser/copy-delete-posts/tags/1.5.6/post/handler.php#L1598
- plugins.trac.wordpress.org /browser/copy-delete-posts/tags/1.5.6/post/handler.php#L1601
- plugins.trac.wordpress.org /browser/copy-delete-posts/tags/1.5.6/post/handler.php#L15
- plugins.trac.wordpress.org /changeset?reponame=&new=3709767%40copy-delete-posts%2Ftags%2F1.5.7&old=3652254%40copy-delete-posts%2Ftags%2F1
- plugins.trac.wordpress.org /changeset/3709767/copy-delete-posts/trunk/menu/notifications.php
Sources
- CVE List CVE-2026-89424
- NVD CVE-2026-89424
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.