Description

Some of our API endpoints allowed to create order payments referencing a gift card by using the auto-incremented internal ID. This ID was not checked and allowed creating payments that reference gift cards from different organizers and thereby obtaining their secret. The gift card is not charged in this case, but by then triggering a refund on the payment, one can increase the value of the gift card.

Related CPE's

Could not find any relations

References

https://pretix.eu/about/en/blog/20261028-release-2026-8-1/

Weaknesses

Could not find any weaknesses

CVSS impact metrics

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/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:X/U:X

5.3 · Medium

Information

Source identifier

655498c3-6ec5-4f0b-aea6-853b334d05a6

Vulnerability status

Deferred

Published

2026-10-28T11:17:13.430Z

5 hours ago

Last modified

2026-10-28T15:24:56.033Z

53 minutes ago