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High, CVSS 8.8amended

express-cart allows any user to create an admin user

CVE-2018-12457GHSA-hr89-w7p6-pjmq

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (express-cart 1.1.6), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
8.8 · CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
  • CVE-2018-12457: 1.89% estimated exploitation activity in the next 30 days; percentile 79.58 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Express-Cart before 1.1.6 allows remote attackers to create an admin user via an /admin/setup Referer header.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-hr89-w7p6-pjmq

  2. Revision 1 · created ·

    Published from osv record GHSA-hr89-w7p6-pjmq

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2018-12457

Advisory: express-cart allows any user to create an admin user
IDs: CVE-2018-12457, GHSA-hr89-w7p6-pjmq
Record: https://patchnext.com/advisories/cve-2018-12457 (revision 2, source checked 26 Oct 2026, 12:41 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: express-cart 1.1.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm express-cart: affected < 1.1.6; fixed in 1.1.6

## Suggested inspection (read-only)
- `npm ls express-cart --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on express-cart.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-hr89-w7p6-pjmq (OSV record GHSA-hr89-w7p6-pjmq lists affected ranges: npm express-cart >=0 <1.1.6 (fixed))
- Verified: https://github.com/advisories/GHSA-hr89-w7p6-pjmq (GitHub-reviewed advisory GHSA-hr89-w7p6-pjmq lists affected ranges: npm express-cart >=0 <1.1.6)

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