CVE-2026-72843: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-m3qj-pp48-6w2p
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CVSS 9.8
CWE-862
Published
Advisory Summary

CVE-2026-72843 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (CWE-862: Missing Authorization) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not perform an authorization check when an actor attempts to access a resource or perform an action.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-72843 at a Glance

CVE Identifier CVE-2026-72843
GHSA Identifier GHSA-m3qj-pp48-6w2p
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-862: Missing Authorization
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-72843

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-72843, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

The customer update route in EverShop is declared with "access": "public" in packages/evershop/src/modules/customer/api/updateCustomer/route.json, which causes the admin authentication middleware to call next() without checking the caller, and no customer-session middleware guards the route; the only middleware in the chain parses the JSON body. The handler in updateCustomer.js then loads the customer by the uuid taken from the URL path and writes the supplied fields back to that record, hashing a password if one is provided, without verifying that the caller owns the record. An unauthenticated request carrying a known customer uuid can therefore overwrite that customer's email address and password and read back the updated record from the 200 response, taking over the account and locking out its owner. Customer uuids are exposed through order confirmation email links and administrative URLs. Version 2.2.1 changes the route to "access": "private".

References

NVD — CVE-2026-72843 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72843
Software Source Repository REPOSITORY
https://github.com/evershopcommerce/evershop/issues/952
Software Source Repository REPOSITORY
https://github.com/evershopcommerce/evershop
Software Source Repository REPOSITORY
https://github.com/evershopcommerce/evershop/blob/v2.1.2/packages/evershop/src/modules/customer/api/updateCustomer/route.json
Software Source Repository REPOSITORY
https://github.com/evershopcommerce/evershop/blob/v2.1.2/packages/evershop/src/modules/customer/api/updateCustomer/updateCustomer.js
Software Release RELEASE
https://github.com/evershopcommerce/evershop/releases/tag/v2.2.1
www.vulncheck.com/advisories/evershop... WEB
https://www.vulncheck.com/advisories/evershop-missing-authorization-on-patch-api-customers-id-allows-unauthenticated-account-takeover

Frequently Asked Questions

What is CVE-2026-72843?
CVE-2026-72843 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-862: Missing Authorization.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-72843?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-72843?
CVE-2026-72843 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-72843?
CVE-2026-72843 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Maven dependencies for CVE-2026-72843?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-m3qj-pp48-6w2p",
  "modified" : "2026-08-21T00:31:23Z",
  "published" : "2026-08-21T00:31:23Z",
  "aliases" : [ "CVE-2026-72843" ],
  "details" : "The customer update route in EverShop is declared with \"access\": \"public\" in packages/evershop/src/modules/customer/api/updateCustomer/route.json, which causes the admin authentication middleware to call next() without checking the caller, and no customer-session middleware guards the route; the only middleware in the chain parses the JSON body. The handler in updateCustomer.js then loads the customer by the uuid taken from the URL path and writes the supplied fields back to that record, hashing a password if one is provided, without verifying that the caller owns the record. An unauthenticated request carrying a known customer uuid can therefore overwrite that customer's email address and password and read back the updated record from the 200 response, taking over the account and locking out its owner. Customer uuids are exposed through order confirmation email links and administrative URLs. Version 2.2.1 changes the route to \"access\": \"private\".",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-72843"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/evershopcommerce/evershop/issues/952"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/evershopcommerce/evershop"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/evershopcommerce/evershop/blob/v2.1.2/packages/evershop/src/modules/customer/api/updateCustomer/route.json"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/evershopcommerce/evershop/blob/v2.1.2/packages/evershop/src/modules/customer/api/updateCustomer/updateCustomer.js"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/evershopcommerce/evershop/releases/tag/v2.2.1"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/evershop-missing-authorization-on-patch-api-customers-id-allows-unauthenticated-account-takeover"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-20T22:18:05Z"
  }
}