CVE-2025-69871 | THREATINT

Description

A race condition vulnerability exists in MedusaJS Medusa v2.12.2 and earlier in the registerUsage() function of the promotion module. The function performs a non-atomic read-check-update operation when enforcing promotion usage limits. This allows unauthenticated remote attackers to bypass usage limits by sending concurrent checkout requests, resulting in unlimited redemptions of limited-use promotional codes and potential financial loss.

PUBLISHED Reserved 2026-01-09 | Published 2026-02-11 | Updated 2026-02-12 | Assigner mitre

References

github.com/medusajs/medusa/pull/13760

github.com/medusajs/medusa

github.com/...es/blob/main/CVE-2025-69871-MedusaJS-TOCTOU.md

cve.org (CVE-2025-69871)

nvd.nist.gov (CVE-2025-69871)

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