Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/craftcms/commerce/commit/a7d365cc33dc4c60c543defb3458bcdb5749
- https://github.com/craftcms/commerce/commit/df22c4f9c4ea7fb7857d833f755e49ea6f9f
- https://github.com/craftcms/commerce/releases/tag/4.11.2
- https://github.com/craftcms/commerce/releases/tag/5.6.5
- https://github.com/craftcms/commerce/security/advisories/GHSA-h5gm-x9wr-vhcm
FAQ
What is CVE-2026-55795?
CVE-2026-55795 is a documented vulnerability. 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 GE...
How severe is CVE-2026-55795?
CVSS scoring is not yet available for CVE-2026-55795. Check NVD for updates.
Is there a patch for CVE-2026-55795?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.