Craft Commerce is an ecommerce platform for Craft CMS. From 4.0.0 until 4.11.2 and 5.6.5, CartController in src/controllers/CartController.php activates its RateLimiter only when the number POST or GET parameter is supplied. An unauthenticated attacker can submit couponCode values to actionUpdateCart for the session-based cart while omitting number, preventing creation of the IP rate-limit identity and allowing unlimited automated coupon-code guessing and enumeration.
This issue is fixed in versions 4.11.2 and 5.6.5.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://github.com/craftcms/commerce/commit/a7d365cc33dc4c60c543defb3458bcdb574…
security-advisories@github.com
https://github.com/craftcms/commerce/commit/df22c4f9c4ea7fb7857d833f755e49ea6f9…
security-advisories@github.com
https://github.com/craftcms/commerce/releases/tag/4.11.2
security-advisories@github.com
https://github.com/craftcms/commerce/releases/tag/5.6.5
security-advisories@github.com
https://github.com/craftcms/commerce/security/advisories/GHSA-h5gm-x9wr-vhcm
security-advisories@github.com