CVE-2026-18029

Severity CVSS v4.0:

MEDIUM

Type:

Unavailable / Other

Publication date:

28/07/2026

Last modified:

30/07/2026

Description

Our payment integration with GiroCheckout did not properly validate <br /> payment status responses. An attacker could use a successful payment <br /> status response from one payment and supply it to the system for a <br /> different payment, gaining access to multiple valid tickets with only <br /> one payment.

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 6.30 MEDIUM
Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Attack Requirements (AT): Present
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): Low
Availability (VA): None
Confidentiality (SC): None
Integrity (SI): Low
Availability (SA): None

Base Score 4.0

6.30

Severity 4.0

MEDIUM

References to Advisories, Solutions, and Tools

https://pretix.eu/about/en/blog/20260728-release-2026-6-1/