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CVE-2026-84753

CriticalPublished

WordPress Mail Mint plugin <= 1.31.0 - PHP Object Injection vulnerability

Published: Sep 3, 2026
Updated: Sep 5, 2026
Assigning CNA: Patchstack
Evidence observed: Sep 18, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 24.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Unauthenticated PHP Object Injection in Mail Mint <= 1.31.0 versions.

Sources

CVE-2026-84753PoC
Proof-of-concept exploit and lab for CVE-2026-84753, an unauthenticated PHP Object Injection in Mail Mint <= 1.31.0 via the mint-form-submit REST endpoint.

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