CVE-2025-9762Network attack vector

Unauthenticated file upload via unchecked email attachments

Published Sep 30, 2025 · Updated Sep 30, 2025

Arbitrary file upload in Peter Westwood's Post By Email 1.0.4b and earlier allows remote attackers to write files via email attachments. The save_attachments function stores emailed attachments in WordPress upload storage without validating their file types. The direct consequence is an unauthenticated file write; code execution requires the server to execute the uploaded file.

CVSS severity9.8
Critical
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Arbitrary file upload in Peter Westwood's Post By Email 1.0.4b and earlier allows remote attackers to write files via email attachments. The save_attachments function stores emailed attachments in WordPress upload storage without validating their file types. The direct consequence is an unauthenticated file write; code execution requires the server to execute the uploaded file.

The record

CVE
CVE-2025-9762
Published
Sep 30, 2025
Updated
Sep 30, 2025
Vendor
Peter Westwood
Product
Post By Email
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=1.0.4b

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Peter Westwood · Post By Emailversion=* <=1.0.4b

Published CVSS scores

9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo