Vulnerability · Published Jul 28, 2026 · Assigned by rami.io
CVE-2026-18029Insufficient validation of payment status in pretix-girosolution
Medium 6.3
In plain English
A medium-severity security flaw in pretix-girosolution from pretix GmbH. 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 26% of all known vulnerabilities).
Severity (CVSS 4.0)6.3Medium
Exploit odds (30 days)0.3%top 73.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Our payment integration with GiroCheckout did not properly validate payment status responses. An attacker could use a successful payment status response from one payment and supply it to the system for a different payment, gaining access to multiple valid tickets with only one payment.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| pretix GmbH | pretix-girosolution | 0 – before 1.0.1 |
Weakness: CWE-841 · 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
References
- https://pretix.eu/about/en/blog/20260728-release-2026-6-1/ vendor-advisory