Post Duplicator <= 3.0.17 — Missing Authorization
CVE-2026-121874Published · Updated Action summary
Affected: ≤3.0.17Update to 3.0.18 or newer
All remediation steps- Severity
- Low2.7
- CVSS
- 2.7CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:HPrivileges required- High
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-863 Incorrect Authorization
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Post Duplicator post-duplicator
- Affected≤ 3.0.17
- Patched in3.0.18
Update to 3.0.18 or newer.
You are affected if you run ≤ 3.0.17. Version 3.0.18 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Post Duplicator.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 3.0.18, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Post Duplicator to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Karthik Ramakrishnan.
The Post Duplicator plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 3.0.17. This is due to a missing capability check on a function. This makes it possible for authenticated attackers, with administrator-level access and above, to perform an unauthorized action.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Post Duplicator
All 13| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.7 | Authenticated (Administrator+) Privilege Escalation <3.0.18Update to 3.0.18 | CVE-2026-121875 | |
| Medium4.3 | Missing Authorization <3.0.17Update to 3.0.17 | CVE-2026-111740 | |
| Medium4.3 | Authorization Bypass to Authenticated (Contributor+) Post Duplication ≤3.0.11Update to 3.0.12 | CVE-2026-4245 | |
| Medium4.3 | Missing Authorization to Authenticated (Contributor+) Post Duplication with Arbitrary Author Attribution ≤3.0.11Update to 3.0.12 | CVE-2026-4244 | |
| High7.5 | Authenticated (Contributor+) PHP Object Injection <3.0.15Update to 3.0.15 | CVE-2026-10749 |
- Medium4.7Authenticated (Administrator+) Privilege Escalation
<3.0.18Update to 3.0.18
- Medium4.3Missing Authorization
<3.0.17Update to 3.0.17
- Medium4.3Authorization Bypass to Authenticated (Contributor+) Post Duplication
≤3.0.11Update to 3.0.12
- Medium4.3Missing Authorization to Authenticated (Contributor+) Post Duplication with Arbitrary Author Attribution
≤3.0.11Update to 3.0.12
- High7.5Authenticated (Contributor+) PHP Object Injection
<3.0.15Update to 3.0.15
Timeline
CVE published
Severity low, CVSS 2.7
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.