CVE-2025-9762: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in westi Post By Email
The Post By Email plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the save_attachments function in all versions up to, and including, 1.0.4b. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
AI Analysis
Technical Summary
CVE-2025-9762 is an OS command injection vulnerability in the Post By Email WordPress plugin by westi. The issue arises from improper neutralization of special elements in the save_attachments function, which lacks file type validation. This allows unauthenticated attackers to upload arbitrary files to the server, potentially enabling remote code execution. The vulnerability affects all versions up to and including 1.0.4b. No patch or official fix information is currently provided.
Potential Impact
Successful exploitation allows unauthenticated attackers to upload arbitrary files to the affected WordPress server, which may lead to remote code execution. This compromises confidentiality, integrity, and availability of the affected system, as reflected by the high CVSS score (9.8). There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict or disable the Post By Email plugin if possible, and monitor for suspicious file uploads. Avoid exposing the plugin to untrusted users. Follow vendor updates closely for patches or official mitigations.
CVE-2025-9762: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in westi Post By Email
Description
The Post By Email plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the save_attachments function in all versions up to, and including, 1.0.4b. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-9762 is an OS command injection vulnerability in the Post By Email WordPress plugin by westi. The issue arises from improper neutralization of special elements in the save_attachments function, which lacks file type validation. This allows unauthenticated attackers to upload arbitrary files to the server, potentially enabling remote code execution. The vulnerability affects all versions up to and including 1.0.4b. No patch or official fix information is currently provided.
Potential Impact
Successful exploitation allows unauthenticated attackers to upload arbitrary files to the affected WordPress server, which may lead to remote code execution. This compromises confidentiality, integrity, and availability of the affected system, as reflected by the high CVSS score (9.8). There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict or disable the Post By Email plugin if possible, and monitor for suspicious file uploads. Avoid exposing the plugin to untrusted users. Follow vendor updates closely for patches or official mitigations.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-08-31T15:08:49.005Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 68db52afa473ffe031e447e7
Added to database: 9/30/2025, 3:46:55 AM
Last enriched: 4/9/2026, 6:14:19 PM
Last updated: 5/10/2026, 5:22:51 AM
Views: 169
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.