CVE-2025-13742
Description
Emails sent by pretix can utilize placeholders that will be filled with customer data. For example, when {name} is used in an email template, it will be replaced with the buyer's name for the final email. If the name of the attendee contained HTML or Markdown formatting, this was rendered as HTML in the resulting email. This way, a user could inject links or other formatted text through a maliciously formatted name. Since pretix applies a strict allow list approach to allowed HTML tags, this could not be abused for XSS or similarly dangerous attack chains. However, it can be used to manipulate emails in a way that makes user-provided content appear in a trustworthy and credible way, which can be abused for phishing.
How to fix
- pretix pretix2025.7.2 or later
- pretix2025.7.3, 2025.8.2, 2025.9.2, 2025.7.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pretix pretix | 1.0.0 ≤ v < 2025.7.2, 2025.8.0, 2025.9.0 | 2025.7.2 |
| pretixPyPI | 1.0.0 ≤ v < 2025.7.3, 2025.8.0 ≤ v < 2025.8.2, 2025.9.0 ≤ v < 2025.9.2, 1.0.0 ≤ v < 2025.7.2 | 2025.7.3, 2025.8.2, 2025.9.2, 2025.7.2 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.