CVE-2026-39498: CWE-502 Deserialization of Untrusted Data in Yeeaddons YayMail
CVE-2026-39498 is a high-severity vulnerability in the YayMail plugin by Yeeaddons, affecting versions up to 4.3.3. It involves PHP Object Injection due to deserialization of untrusted data by users with shop manager privileges. This vulnerability can lead to complete compromise of confidentiality, integrity, and availability of the affected system. No official patch or remediation guidance is currently provided by the vendor.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-39498) in YayMail (<=4.3.3) arises from unsafe deserialization of untrusted data, classified under CWE-502. It allows a user with shop manager privileges to perform PHP Object Injection, potentially leading to remote code execution or other severe impacts. The CVSS 3.1 base score is 7.2, indicating high severity with network attack vector, low attack complexity, high privileges required, no user interaction, and full impact on confidentiality, integrity, and availability. No patch or official remediation level has been disclosed as of the publication date.
Potential Impact
Successful exploitation could allow an attacker with shop manager privileges to execute arbitrary code or manipulate application behavior, resulting in full compromise of confidentiality, integrity, and availability of the affected system. This could lead to unauthorized data access, data modification, or service disruption.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict shop manager privileges to trusted users only and monitor for suspicious activity related to YayMail plugin usage.
CVE-2026-39498: CWE-502 Deserialization of Untrusted Data in Yeeaddons YayMail
Description
CVE-2026-39498 is a high-severity vulnerability in the YayMail plugin by Yeeaddons, affecting versions up to 4.3.3. It involves PHP Object Injection due to deserialization of untrusted data by users with shop manager privileges. This vulnerability can lead to complete compromise of confidentiality, integrity, and availability of the affected system. No official patch or remediation guidance is currently provided by the vendor.
CVSS v3.1
Score 7.2high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-39498) in YayMail (<=4.3.3) arises from unsafe deserialization of untrusted data, classified under CWE-502. It allows a user with shop manager privileges to perform PHP Object Injection, potentially leading to remote code execution or other severe impacts. The CVSS 3.1 base score is 7.2, indicating high severity with network attack vector, low attack complexity, high privileges required, no user interaction, and full impact on confidentiality, integrity, and availability. No patch or official remediation level has been disclosed as of the publication date.
Potential Impact
Successful exploitation could allow an attacker with shop manager privileges to execute arbitrary code or manipulate application behavior, resulting in full compromise of confidentiality, integrity, and availability of the affected system. This could lead to unauthorized data access, data modification, or service disruption.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict shop manager privileges to trusted users only and monitor for suspicious activity related to YayMail plugin usage.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-04-07T10:47:43.843Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3061430b89be688893cf80
Added to database: 6/15/2026, 8:32:03 PM
Last enriched: 6/15/2026, 10:02:55 PM
Last updated: 6/16/2026, 4:57:26 AM
Views: 3
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