Vulnerability details
CVE-2026-12583
Newsletters
Newsletters < 4.15 - Unauthenticated PHP Object Injection via Subscriber Custom Field
CVSS 3.1
8.1High
Official description
The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.1High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| — | Newsletters | v < 4.15 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://wpscan.com/vulnerability/e4c44105-f43d-4dff-8487-7d8ae2691c4e/ exploitvdb-entrytechnical-description
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Details
- Published
- 2026-07-14
- Last updated
- 2026-07-14
- State
- Published
- Assigner (CNA)
- WPScan
Exploit prediction (EPSS)
2.02%
Probability of exploitation in 30 days
81%
Percentile (among all CVEs)
- 2026-11-062.02%
- 2026-11-030.55%
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-502Deserialization of Untrusted Data