---
title: "CVE-2023-46943: EverShop at risk to unauthorized access via weak HMAC secret"
url: https://erroneo.us/security/cve/CVE-2023-46943/
description: "CVE-2023-46943 (@evershop/evershop (npm)): An issue was discovered in NPM's package @evershop/evershop before version 1.0.0-rc.8. The HMAC secret used for…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-01-13
date_modified: 2024-11-18
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-46943"
kev: false
cvss: 9.1
epss: 0.00498
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-46943: EverShop at risk to unauthorized access via weak HMAC secret

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.5% , percentile 42: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 42% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes @evershop/evershop (npm) < 1.0.0-rc.9, fixed in 1.0.0-rc.9 . Check your lockfile, including transitive dependencies.

## What it is

An issue was discovered in NPM's package @evershop/evershop before version 1.0.0-rc.8. The HMAC secret used for generating tokens is hardcoded as "secret". A weak HMAC secret poses a risk because attackers can use the predictable secret to create valid JSON Web Tokens (JWTs), allowing them access to important information and actions within the application.

## Affected packages

- npm `@evershop/evershop` < 1.0.0-rc.9 → fixed: 1.0.0-rc.9

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`
- GitHub CVSS 4.0: 9.1 `CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.50% probability of exploitation activity in the next 30 days; percentile 42.

## Sources

- [GitHub Advisory GHSA-32r3-57hp-cgfw](https://github.com/advisories/GHSA-32r3-57hp-cgfw)
- [CVE.org record CVE-2023-46943](https://www.cve.org/CVERecord?id=CVE-2023-46943)
- [NVD entry CVE-2023-46943](https://nvd.nist.gov/vuln/detail/CVE-2023-46943)
- [devhub.checkmarx.com](https://devhub.checkmarx.com/cve-details/CVE-2023-46943/)
- [advisory.checkmarx.net](https://advisory.checkmarx.net/advisory/CVE-2023-46943/)
- [github.com](https://github.com/evershopcommerce/evershop/commit/96d9ca3e024e0b63c538911e4a914df3d287cc9f)

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Source page: https://erroneo.us/security/cve/CVE-2023-46943/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt