https://seclists.org/oss-sec/2026/q2/443: XSS in Postorius (Mailman 3) 1.3.13 and earlier

Published May 8, 2026
·
Updated

Affected Software

1 affected component
Mailman Postorius<=1.3.13
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Frequently Asked Questions

1

What is the severity of CVE-2026-XXXX?

The severity of CVE-2026-XXXX is considered to be high due to the potential for exploitation through cross-site scripting.

2

How do I fix CVE-2026-XXXX?

To fix CVE-2026-XXXX, upgrade Postorius to version 1.3.14 or later.

3

What versions of Postorius are affected by CVE-2026-XXXX?

CVE-2026-XXXX affects Postorius versions 1.3.13 and earlier.

4

What type of vulnerability is CVE-2026-XXXX?

CVE-2026-XXXX is a cross-site scripting (XSS) vulnerability.

5

Are there any workarounds for CVE-2026-XXXX until I can update?

As a workaround for CVE-2026-XXXX, consider implementing a web application firewall to filter XSS attacks.

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