CVE-2026-18029 (GCVE-0-2026-18029)

Vulnerability from cvelistv5 – Published: 2026-07-28 10:39 – Updated: 2026-07-28 12:36
VLAI
Title
Insufficient validation of payment status in pretix-girosolution
Summary
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.
Severity
6.3 (Medium)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 12:31 UTC
CWE
  • CWE-841 - Improper enforcement of behavioral workflow
Assigner
References
Impacted products
Vendor Product Version CPE status
pretix GmbH pretix-girosolution Affected: 0 , < 1.0.1 (python)
guessed Create a notification for this product.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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