CVE-2026-55795Public exploitNetwork attack vectorHinoki check available

Coupon enumeration via conditional rate limiting

Published Sep 14, 2026 · Updated Sep 14, 2026

Improper rate limiting in Craft Commerce 4.0.0 through 4.11.1 and 5.0.0 through 5.6.4 allows remote attackers to enumerate coupon codes. CartController activates its RateLimiter only when a number parameter is present, so couponCode-only actionUpdateCart requests receive no IP rate-limit identity. No authentication is required; repeated requests against the session-based cart disclose which coupon codes are valid without altering other application data.

CVSS severity6.9
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper rate limiting in Craft Commerce 4.0.0 through 4.11.1 and 5.0.0 through 5.6.4 allows remote attackers to enumerate coupon codes. CartController activates its RateLimiter only when a number parameter is present, so couponCode-only actionUpdateCart requests receive no IP rate-limit identity. No authentication is required; repeated requests against the session-based cart disclose which coupon codes are valid without altering other application data.

The record

CVE
CVE-2026-55795
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Pixel & Tonic
Product
Craft Commerce
Classifications
CWE-307
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 4.0.0, < 4.11.2
  2. Affected versionversion=>= 5.0.0, < 5.6.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pixel & Tonic · Craft Commerceversion=>= 4.0.0, < 4.11.2; version=>= 5.0.0, < 5.6.5

Published CVSS scores

6.9GitHubCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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