CVE-2026-48838
Deferred Deferred - Pending Action
Unauthenticated XSS in Post SMTP Mailer

Publication date: 2026-06-15

Last updated on: 2026-06-15

Assigner: Patchstack

Description
Unauthenticated Cross Site Scripting (XSS) in Post SMTP <= 3.6.2 versions.
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Meta Information
Published
2026-06-15
Last Modified
2026-06-15
Generated
2026-06-16
AI Q&A
2026-06-16
EPSS Evaluated
N/A
NVD
CVE-2026-48838
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
post_smtp post_smtp 3.6.2
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability is an Unauthenticated Cross Site Scripting (XSS) issue found in Post SMTP versions 3.6.2 and earlier.

It allows an attacker to inject malicious scripts into the application without needing to be authenticated.

Impact Analysis

Exploitation of this vulnerability can lead to the execution of malicious scripts in the context of the affected application.

  • Potential impacts include data theft, session hijacking, and unauthorized actions performed on behalf of legitimate users.
  • Since the vulnerability is unauthenticated, attackers do not need valid credentials to exploit it.
  • The CVSS score of 7.1 indicates a high severity with impacts on confidentiality, integrity, and availability.
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