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CVE-2026-4244— Post Duplicator <= 3.0.11 - Missing Authorization to Authenticated (Contributor+) Post Duplication with Arbitrary Author Attribution

Quick assessment

Affected
metaphorcreations Post Duplicator
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Post Duplicator是WordPress基金会开源的一款复制文章内容的CMS插件。 WordPress Post Duplicator 3.0.11及之前版本存在授权问题漏洞，该漏洞源于duplicate_post()函数缺少功能检查，未验证用户是否具有edit_others_posts权限，可能导致经过身份验证的攻击者（具有贡献者级别及以上访问权限）创建归属于任何用户（包括管理员）的重复帖子。

CVSS 4.3 · Medium EPSS 0.34% · P26

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
metaphorcreations Post Duplicator ≤ 3.0.11 affected
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I. Basic Information for CVE-2026-4244

Vulnerability Information
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Vulnerability Title
Post Duplicator <= 3.0.11 - Missing Authorization to Authenticated (Contributor+) Post Duplication with Arbitrary Author Attribution
Source: CVE Program / CVE List V5
Vulnerability Description
The Post Duplicator plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `duplicate_post()` function in all versions up to, and including, 3.0.11. This is due to the function not verifying that the user has `edit_others_posts` capability before accepting a `selectedAuthorId` parameter via the `duplicate-post` REST endpoint. This makes it possible for authenticated attackers, with Contributor-level access and above, to create duplicated posts attributed to any user, including administrators.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Post Duplicator 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Post Duplicator是WordPress基金会开源的一款复制文章内容的CMS插件。 WordPress Post Duplicator 3.0.11及之前版本存在授权问题漏洞，该漏洞源于duplicate_post()函数缺少功能检查，未验证用户是否具有edit_others_posts权限，可能导致经过身份验证的攻击者（具有贡献者级别及以上访问权限）创建归属于任何用户（包括管理员）的重复帖子。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
metaphorcreations Post Duplicator 0 ~ 3.0.11 -

II. Public POCs for CVE-2026-4244

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III. Intelligence Information for CVE-2026-4244

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Patches & Fixes for CVE-2026-4244 (1)

News Coverage for CVE-2026-4244 (1)

IV. Related Vulnerabilities

Same product: Post Duplicator
Same vendor: metaphorcreations
Same weakness: CWE-862

V. Comments for CVE-2026-4244

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