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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.

PUBLISHED Reserved 2026-06-18 | Published 2026-07-14 | Updated 2026-07-14 | Assigner WPScan

Problem types

CWE-502 Deserialization of Untrusted Data

Product status

Default status
unaffected

Any version before 4.15
affected

Credits

Yaswanth Reddy Sunkara finder

WPScan coordinator

References

wpscan.com/...rability/e4c44105-f43d-4dff-8487-7d8ae2691c4e/ exploit vdb-entry technical-description

cve.org (CVE-2026-12583)

nvd.nist.gov (CVE-2026-12583)

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