PHP object injection in Enable Media Replace WordPress plugin
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Code execution
- 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-502.
Summary
The WordPress plugin Enable Media Replace from 4.1.4 before 4.2.3 does not restrict deserialized classes in stored metadata. This flaw (CWE-502) lets unauthenticated users inject a PHP object during the media replace-and-update-links routine. Performing a routine media replacement as a user with upload access instantiates the object, enabling local file inclusion and, where an attacker-influenced PHP or HTML file is present, remote code execution. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
Description from the CNA
The Enable Media Replace WordPress plugin before 4.2.3 does not restrict the classes allowed when deserializing stored metadata during its media replace-and-update-links routine, allowing unauthenticated users to inject a PHP object that is instantiated when a user with upload access performs a routine media replacement, resulting in PHP Object Injection and local file inclusion of existing PHP/HTML files, which can be escalated to remote code execution where an attacker-influenced PHP or HTML file is present on the server. This is a regression of CVE-2023-4643, which was fixed in 4.1.3 and reintroduced in 4.1.4.
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 | Enable Media Replace | 4.1.4 to before 4.2.3 | 4.2.3 | Patch available | CNA |
- Enable Media Replace VendorUnknown Affected 4.1.4 to before 4.2.3 Fixed in 4.2.3 Patch available CNA
Remediation
Update Enable Media Replace to version 4.2.3, the fixed version.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
- Fix · CNA Enable Media Replace (Unknown) Fixed in 4.2.3
Timeline
- 2026-10-30 Threatist record created from CVE-2026-114422
- 2026-10-30 Alias added: GHSA-57rw-qx68-p67c
- 2026-10-30 CVSS score added · CISA ADP
- 2026-10-30 Weakness changed · CISA ADP
- 2026-10-30 CISA SSVC decision points changed
- 2026-10-31 EPSS moved to the below the 50th percentile
References
Sources
- CVE-2026-114422 · CVE Program
- CVE-2026-114422 · NVD
- FIRST EPSS
- GHSA-57rw-qx68-p67c · GitHub Advisory Database · CC BY 4.0
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