---
id: CVE-2026-76910
title: Unleash is an open-source feature management platform
summary: >-
  Unleash is an open-source feature management platform. Prior to 8.0.3,
  cloneFeatureToggle and POST
  /api/admin/projects/:projectId/features/:featureName/clone authorize creation
  in the destination project but do not verify access to the s…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-639
vendor: Unleash
product: unleash
affected:
  - unleash < 8.0.3
patched:
  - unleash-server 8.0.3
published: '2026-09-22'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T20:17:15.303'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76910'
references:
  - url: >-
      https://github.com/Unleash/unleash/commit/2dc6ac0e8ba524ec7a2e9bc96a0e01d9d6f5a35a
    label: security-advisories@github.com
  - url: 'https://github.com/Unleash/unleash/releases/tag/v8.0.3'
    label: security-advisories@github.com
  - url: 'https://github.com/Unleash/unleash/security/advisories/GHSA-8xcj-9hfr-fh9j'
    label: security-advisories@github.com
  - url: 'https://github.com/Unleash/unleash/security/advisories/GHSA-8xcj-9hfr-fh9j'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-8xcj-9hfr-fh9j'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - npm
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-23T19:39:54.672469Z'
cvssSource: cna
epss: 0.00302
epssPercentile: 0.20471
aliases:
  - GHSA-8xcj-9hfr-fh9j
ecosystem: npm
ingestedAt: '2026-09-22T21:11:40.320Z'
---

## Overview

Unleash is an open-source feature management platform. Prior to 8.0.3, cloneFeatureToggle and POST /api/admin/projects/:projectId/features/:featureName/clone authorize creation in the destination project but do not verify access to the source project. Because feature names are globally unique, a user with create or clone permission in one project who knows or guesses another project's feature name can copy that feature into the authorized project and inspect its strategy parameters, constraints, variants, and variant payloads. This issue is fixed in version 8.0.3.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-76910)

Affected packages:

- `unleash-server < 8.0.3`

Patched in:

- `unleash-server 8.0.3`

Source: https://github.com/advisories/GHSA-8xcj-9hfr-fh9j