CVE-2025-69871

HIGH

8.1

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.

CVE Details

CVSS v3.1 Score8.1

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published2/11/2026

Last Modified2/12/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-362

References

https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69871-MedusaJS-TOCTOU.md(cve@mitre.org)

https://github.com/medusajs/medusa(cve@mitre.org)

https://github.com/medusajs/medusa/pull/13760(cve@mitre.org)

IOC Correlations

No correlations recorded

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