Pretix Computop
Monthly
Payment response replay in the pretix-computop integration allows an unauthenticated network attacker to obtain multiple valid event tickets by paying only once. The Pretix Computop plugin fails to bind successful payment status responses to their originating transaction, so a response captured from a completed payment can be submitted against any other pending order. No active exploitation has been confirmed (not listed in CISA KEV) and no public exploit code has been identified, though the vendor disclosed the issue alongside a fix on 2026-06-25.
Payment response replay in the pretix-computop integration allows an unauthenticated network attacker to obtain multiple valid event tickets by paying only once. The Pretix Computop plugin fails to bind successful payment status responses to their originating transaction, so a response captured from a completed payment can be submitted against any other pending order. No active exploitation has been confirmed (not listed in CISA KEV) and no public exploit code has been identified, though the vendor disclosed the issue alongside a fix on 2026-06-25.