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No exploitation reportedAwaiting NVD analysis

CVE-2026-121874

Post Duplicator < 3.0.18 - Admin+ Arbitrary Option Update via Unvalidated Option Name

No exploitation reported by the sources we read.

  • Published2026-11-09
  • WeaknessCWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The Post Duplicator WordPress plugin before 3.0.18 does not restrict settings saves to its own options, allowing a site administrator on a multisite network who is not a Super Admin to overwrite arbitrary options of their site, including the role definitions, and so grant themselves network-management capabilities.

Timeline

dates in UTC
  1. 2026-11-0906:00CVE publishedCNA

Versions per branch

Products declared by the CNA

As WPScan, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Unknown Post Duplicatorother versions: not affected
    Affected
    • < 3.0.18fixed in 3.0.18semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-09

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-121874 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
2026-11-09
Last Modified
2026-11-09
NVD status
Received
GitHub Advisory
GHSA-q7h7-28h6-p557

Frequently asked questions

What is CVE-2026-121874?

The Post Duplicator WordPress plugin before 3.0.18 does not restrict settings saves to its own options, allowing a site administrator on a multisite network who is not a Super Admin to overwrite arbitrary options of their site, including the role definitions, and so grant themselves network-management capabilities.

Is CVE-2026-121874 actively exploited?

Active exploitation of CVE-2026-121874 has not been confirmed.

What is the CVSS score for CVE-2026-121874?

CVE-2026-121874 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

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Sources for this record