Duplicator multisite subsite admins can execute PHP network-wide
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269.
Summary
The Duplicator WordPress plugin from 1.5.17 before 5.0.0 does not restrict its one-click upgrade routine to users allowed to install plugins, and it exposes that routine without authentication (CWE-269). An administrator of a multisite subsite who is not a network administrator can install and run arbitrary PHP in the plugin directory shared across the network. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The Duplicator WordPress plugin before 5.0.0 does not restrict its one-click upgrade routine to users allowed to install Duplicator WordPress plugin before 5.0.0, and additionally exposes the routine without authentication, allowing an administrator of a multisite child site who is not a network administrator to install and run arbitrary PHP in the network-wide shared Duplicator WordPress plugin before 5.0.0 directory.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Duplicator | 1.5.17 to before 5.0.0 | 5.0.0 | Patch available | CNA |
- Duplicator VendorUnknown Affected 1.5.17 to before 5.0.0 Fixed in 5.0.0 Patch available CNA
Remediation
Update the Duplicator WordPress plugin to version 5.0.0 or later.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA Duplicator (Unknown) Fixed in 5.0.0
Timeline
- 2026-10-25 Threatist record created from CVE-2026-115251
- 2026-10-26 CVSS score added · CISA ADP
- 2026-10-26 Weakness changed · CISA ADP
- 2026-10-26 CISA SSVC decision points changed
- 2026-10-27 Alias added: GHSA-j9mp-rgph-hchj
References
Sources
- CVE-2026-115251 · CVE Program
- CVE-2026-115251 · NVD
- FIRST EPSS
- GHSA-j9mp-rgph-hchj · GitHub Advisory Database · CC BY 4.0
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