CVE-2026-55795
MediumCVSS 6.9Summary
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.
Risk Assessment
An attacker can brute-force coupon codes, potentially leading to unauthorized discounts or server resource exhaustion.
Recommendation
Update Craft Commerce to version 4.11.2 or 5.6.5, which contain the fix.
Other vulnerabilities in Craft Commerce
See all- CVE-2026-32272High
An SQL injection vulnerability in Craft Commerce (versions 5.0.0-5.5.4) exists in the ProductQuery::hasVariant and VariantQuery::hasProduct properties, which bypass the sanitization blocklist. An authenticated control panel user can exploit boolean-based blind SQL injection to extract arbitrary database contents, including security keys that enable forging admin sessions.
- CVE-2026-32271High
An SQL injection vulnerability in Craft Commerce (versions 4.0.0-4.10.2 and 5.0.0-5.5.4) in the Commerce TotalRevenue widget allows any authenticated control panel user to achieve remote code execution through a four-step exploitation chain. The attack exploits unsanitized widget settings and PDO's default multi-statement support to inject a maliciously serialized PHP object into the queue table.
Original NVD description (English source)
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.