CVE-2025-69871
MedusaJS Promotion Module Unauthenticated Race Condition Vulnerability
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.
INFO
Published Date :
Feb. 11, 2026, 7:15 p.m.
Last Modified :
Feb. 11, 2026, 7:15 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-69871
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update MedusaJS to a version that fixes this race condition.
- Ensure promotion usage limits are handled atomically.
- Review and test promotion redemption logic for concurrency issues.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-69871.
| URL | Resource |
|---|---|
| https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69871-MedusaJS-TOCTOU.md | |
| https://github.com/medusajs/medusa | |
| https://github.com/medusajs/medusa/pull/13760 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-69871 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-69871
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-69871 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-69871 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Feb. 11, 2026
Action Type Old Value New Value Added 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. Added Reference https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69871-MedusaJS-TOCTOU.md Added Reference https://github.com/medusajs/medusa Added Reference https://github.com/medusajs/medusa/pull/13760