CVE-2026-13223 Insufficient validation of payment status in pretix-computop

Medium 6.3 Published Updated

Attackers can reuse valid payment status responses to obtain multiple tickets for a single payment, bypassing payment validation in pretix.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-13223?

CVE-2026-13223 is a medium-severity vulnerability in pretix-computop, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Our payment integration with Computop-based payment methods 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.

Weakness: CWE-841

Which versions are affected by CVE-2026-13223?

How do I fix CVE-2026-13223?

No fix has been published for CVE-2026-13223 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-13223 being exploited?

There is no known exploitation of CVE-2026-13223 in the wild and no public exploit code.

Sources

Also known as GHSA-5qw6-59g4-vvqw.

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