Answer in brief
CVE-2026-55795 records a Medium severity (CVSS 6.9) vulnerability in Craft Commerce: Coupon Code Brute-Force via Rate Limit Bypass. The current sources do not mark it as known exploited. The current feed maps craftcms/commerce (composer), craftcms/commerce (composer), craftcms/commerce (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps craftcms/commerce (composer), craftcms/commerce (composer), craftcms/commerce (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| craftcms/commercecomposer | >=5.0.0,<=5.6.4 | 5.6.5 |
| craftcms/commercecomposer | >=4.0.0,<=4.11.1 | 4.11.2 |
| craftcms/commercegeneric | >=4.0.0 <4.11.2 || >=5.0.0 <5.6.5 | 4.11.2, 5.6.5 |
Published upstream
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.