CVE-2026-55795

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Source
https://cve.org/CVERecord?id=CVE-2026-55795
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55795.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55795
Aliases
Published
2026-09-14T15:55:14Z
Modified
2026-10-21T02:58:39Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Craft Commerce: Coupon Code Brute-Force via Rate Limit Bypass
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-307"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55795.json"
}
References

Affected packages

Git / github.com/craftcms/commerce

Affected ranges

Type
GIT
Repo
https://github.com/craftcms/commerce
Events
Introduced
03fe68b8a09d05b028c510411b55af6cea6a089a
Fixed
bccb7fd016038ccd5ae4dd74fbc4d704ca81e4f0
Introduced
266ccfd800264c4a0a7c22447112c097b0af7bae
Fixed
fe70f81138ff3730feb4d827ac4641fb6dfd51d4
Fixed
a7d365cc33dc4c60c543defb3458bcdb5749bc13
Fixed
df22c4f9c4ea7fb7857d833f755e49ea6f9f5bb5
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "4.0.0"
                },
                {
                    "fixed":  "4.11.2"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "introduced":  "5.0.0"
                },
                {
                    "fixed":  "5.6.5"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "a7d365cc33dc4c60c543defb3458bcdb5749bc13"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "range":  [
                {
                    "fixed":  "df22c4f9c4ea7fb7857d833f755e49ea6f9f5bb5"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "4.11.2",
            "range":  [
                {
                    "fixed":  "bccb7fd016038ccd5ae4dd74fbc4d704ca81e4f0"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "5.6.5",
            "range":  [
                {
                    "fixed":  "fe70f81138ff3730feb4d827ac4641fb6dfd51d4"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

5.*
5.0.0
5.0.1
5.0.10
5.0.10.1
5.0.11
5.0.11.1
5.0.12
5.0.12.1
5.0.13
5.0.14
5.0.15
5.0.16
5.0.16.1
5.0.16.2
5.0.17
5.0.18
5.0.19
5.0.2
5.0.3
5.0.4
5.0.5
5.0.6
5.0.7
5.0.8
5.0.9
5.1.0
5.1.0.1
5.1.2
5.1.3
5.1.4
5.2.0
5.2.1
5.2.10
5.2.11
5.2.12
5.2.12.1
5.2.2
5.2.2.1
5.2.3
5.2.4
5.2.5
5.2.8
5.2.9
5.2.9.1
5.3.0
5.3.0.1
5.3.0.2
5.3.1
5.3.10
5.3.11
5.3.12
5.3.13
5.3.2
5.3.2.1
5.3.2.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.4.0
5.4.1
5.4.1.1
5.4.10
5.4.2
5.4.3
5.4.4
5.4.5
5.4.5.1
5.4.6
5.4.7
5.4.7.1
5.4.8
5.4.9
5.5.0
5.5.0.1
5.5.1
5.5.2
5.5.3
5.5.4
5.6.0
5.6.1
5.6.1.1
5.6.2
5.6.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55795.json"