CVE-2026-57535: Pretix

Low severity, CVSS 2.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Content injected to PDF rendering contexts could, in many places, include HTML content including <img> tags. If the src attribute of these images pointed to an URL, the PDF rendering engine would download the image from that place and display it, thereby leaking information about the rendering server and possibly creating an SSRF vector in the local network.

Affected products

• Pretix Pretix: before 2026.3.4 (fixed in 2026.3.4); from 2026.4.0, before 2026.4.4 (fixed in 2026.4.4); from 2026.5.0, before 2026.5.2 (fixed in 2026.5.2)

Published 2026-06-25. Last modified 2026-06-25.