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Mail Mint - Security Vulnerability (CVE-2026-84753)

CVE-2026-84753

Vulnerability CVE-2026-84753 PLUGIN mail-mint CRITICAL

Unauthenticated PHP Object Injection in Mail Mint

CVE-2026-84753

CRITICAL CVSS 9.8 Published 2026-09-03 Updated 2026-09-03
AI Risk Critical (96/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P1 Immediate
Severity Band CRITICAL
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Components 1
Reference Links 1
AI Risk Engine Critical (96/100)
Exploitability High
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2026-09-03 CVE published and first recorded in the threat feed.
  2. 2026-09-03 Record updated with latest vulnerability metadata.
  3. 2026-09-05 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated just now

AI enriched just now (2026-09-05 05:38 UTC)

Technical Summary

Unauthenticated PHP Object Injection in Mail Mint

Potential Impact

Severity is CRITICAL (CVSS 9.8). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as High based on low-bar exploit prerequisites.

Primary risk drivers: low-bar exploit prerequisites

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 96/100 (Critical, High) with priority P1 Immediate. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Mail Mint PLUGIN · mail-mint Affected: <= 1.31.0 Fixed in: 1.31.1

Related Vulnerabilities

Browse All Threats

Newest linked vulnerabilities to keep visitors exploring adjacent CVE coverage.

Mail Mint - Security Vulnerability (CVE-2026-84755) CVE-2026-84755 Published 2026-09-03 New Mail Mint - SQL Injection (CVE-2026-12918) CVE-2026-12918 Published 2026-07-10 Mail Mint - SQL Injection (CVE-2026-14342) CVE-2026-14342 Published 2026-07-09 Mail Mint - Security Vulnerability (CVE-2026-2025) CVE-2026-2025 Published 2026-03-04 Mail Mint - SQL Injection (CVE-2026-1258) CVE-2026-1258 Published 2026-02-14 Mail Mint - Cross-Site Scripting (XSS) (CVE-2026-1447) CVE-2026-1447 Published 2026-02-03

References

What to do about this

Patch immediately Serious, and reachable without meaningful privilege.

Fix it

Update Mail Mint to 1.31.1 or later.

That is the complete fix. Everything below is what protects you in the meantime.

Cannot update today? Request / payload inspection (WAF) in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Inspect request parameters and bodies for injection, traversal and file-inclusion payloads, and refuse the request rather than logging it.

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Not sure if you are affected?

Scan your site to see whether it runs Mail Mint, and at which version.

Free, no installation, no account. It reads what your site already publishes, then tells you which plugins carry known vulnerabilities and what to do about each one.

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Am I affected by this vulnerability?

You are affected if your site runs Mail Mint. Versions below 1.31.1 are vulnerable; that release and later are not. No account is needed to exploit this, so a public site is reachable by anyone.

How do I fix it?

Update Mail Mint to version 1.31.1 or later. That is the complete fix. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

What can an attacker actually do?

This is a PHP Object Injection flaw. An attacker who exploits it can construct objects the application never intended, often reaching code execution.

WordPress security that blocks attacks before they land.

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