CVEvulnerability

CVE-2026-2452

7.5 HIGH Published 2026-02-16 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-02-16
Last modified
2026-06-17
Assigner
655498c3-6ec5-4f0b-aea6-853b334d05a6
CVSS 4.0 (655498c3-6ec5-4f0b-aea6-853b334d05a6)
7.5 HIGH — CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:L/U:Red
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-627

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. This mechanism contained a security-relevant bug: It was possible to exfiltrate information about the pretix system through specially crafted placeholder names such as {{event.__init__.__code__.co_filename}}. This way, an attacker with the ability to control email templates (usually every user of the pretix backend) could retrieve sensitive information from the system configuration, including even database passwords or API keys. pretix does include mechanisms to prevent the usage of such malicious placeholders, however due to a mistake in the code, they were not fully effective for this plugin. Out of caution, we recommend that you rotate all passwords and API keys contained in your pretix.cfg https://docs.pretix.eu/self-hosting/config/  file.

Affected configurations

• pretix newsletters (< 1.6.3) • pretix newsletters 2.0.0 • pretix pretix (>= 4.16.0 < 2026.1.1)

Related

Weakness · CWE (1)

  • CWE-627 Dynamic Variable Evaluation weakness

References