Vulnerability · Published Oct 28, 2026 · Assigned by pretix

CVE-2026-101273Giftcard enumeration

Medium 5.3

In plain English

A medium-severity authorization bypass via user-controlled key in pretix from pretix. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.3%top 72.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
pretix	pretix	0 – before 2026.6.42026.7.0 – before 2026.7.32026.8.0 – before 2026.8.1

Weakness: CWE-639 · Vector: 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

References

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