HOMEVULNERABILITIESCVE-2026-31867
MEDIUM

CVE-2026-31867

CWE-639Published: March 11, 2026· Updated: Mar 17, 2026

4.8
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:12.2th

Official Description

Craft Commerce is an ecommerce platform for Craft CMS. Prior to 4.11.0 and 5.6.0, An Insecure Direct Object Reference (IDOR) vulnerability exists in Craft Commerce’s cart functionality that allows users to hijack any shopping cart by knowing or guessing its 32-character number. The CartController accepts a user-supplied number parameter to load and modify shopping carts. No ownership validation is performed - the code only checks if the order exists and is incomplete, not whether the requester has authorization to access it. This vulnerability enables the takeover of shopping sessions and potential exposure of PII. This vulnerability is fixed in 4.11.0 and 5.6.0.

NVD Source

Technical Analysis

CVE-2026-31867 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected Vendors & Products

craftcms1 product
craft commerce
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/craftcms/commerce/pull/4207
PATCHhttps://github.com/craftcms/commerce/security/advisories/GHSA-vff3-pqq8-4cpq

All References (2)

→
https://github.com/craftcms/commerce/pull/4207Issue Tracking · Patch
→
https://github.com/craftcms/commerce/security/advisories/GHSA-vff3-pqq8-4cpqPatch · Vendor Advisory · Exploit

Quick Facts

CVE IDCVE-2026-31867
CVSS Score4.8 / 10
SeverityMEDIUM
WeaknessCWE-639
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMar 11, 2026

Related CVEs (CWE-639)

CVE-2026-29200
9.9
CVE-2026-45552
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CVE-2026-52782
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CVE-2026-55255
KEV9.9
CVE-2026-2347
9.8
CVE-2019-25487
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31867 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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