CVE-2026-31867Network attack vector

Cart hijacking via unchecked cart number

Published Mar 11, 2026 · Updated Mar 11, 2026

Authorization bypass in Pixel & Tonic Craft Commerce 4.x before 4.11.0 and 5.x before 5.6.0 allows remote attackers to hijack shopping carts. CartController actionLoadCart and _getCart select an incomplete order using a supplied 32-character number without verifying ownership. Knowledge of an active cart number is required; a successful load takes over the shopping session and exposes cart PII.

CVSS severity6.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Pixel & Tonic Craft Commerce 4.x before 4.11.0 and 5.x before 5.6.0 allows remote attackers to hijack shopping carts. CartController actionLoadCart and _getCart select an incomplete order using a supplied 32-character number without verifying ownership. Knowledge of an active cart number is required; a successful load takes over the shopping session and exposes cart PII.

The record

CVE
CVE-2026-31867
Published
Mar 11, 2026
Updated
Mar 11, 2026
Vendor
Pixel & Tonic
Product
Craft Commerce
Classifications
CWE-639, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 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, < 4.11.0
  2. Affected versionversion=>= 5.0.0, < 5.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pixel & Tonic · Craft Commerceversion=>= 4.0.0, < 4.11.0; version=>= 5.0.0, < 5.6.0

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
6.3GitHub, Inc.CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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