---
id: CVE-2026-77425
title: Unleash is an open-source feature management platform
summary: >-
  Unleash is an open-source feature management platform. Prior to 8.0.3, POST
  /api/admin/projects/:projectId/features/:featureName/environments/:environment/strategies/set-sort-order
  passes attacker-controlled strategy IDs to unprotectedUp…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-639
  - CWE-863
vendor: Unleash
product: unleash
affected:
  - unleash < 8.0.3
patched:
  - unleash-server 8.0.3
published: '2026-09-22'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:12:04.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77425'
references:
  - url: >-
      https://github.com/Unleash/unleash/commit/43e8db37b846921c8a94db58b44935ecbd15d9d1
    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-5ffh-6f9q-5hhr'
    label: security-advisories@github.com
  - url: 'https://github.com/Unleash/unleash/security/advisories/GHSA-5ffh-6f9q-5hhr'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-5ffh-6f9q-5hhr'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - npm
epss: 0.0023
epssPercentile: 0.12289
aliases:
  - GHSA-5ffh-6f9q-5hhr
ecosystem: npm
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-23T13:08:20.646084Z'
ingestedAt: '2026-09-22T21:11:40.318Z'
---

## Overview

Unleash is an open-source feature management platform. Prior to 8.0.3, POST /api/admin/projects/:projectId/features/:featureName/environments/:environment/strategies/set-sort-order passes attacker-controlled strategy IDs to unprotectedUpdateStrategiesSortOrder and updateSortOrder without verifying that the IDs belong to the project, feature, and environment authorized by the URL. In a multi-project Pro or Enterprise deployment, an authenticated user with UPDATE_FEATURE_STRATEGY in one project who knows another project's strategy IDs can reorder those strategies, changing feature evaluation precedence while the operation is attributed to the attacker's URL context rather than the affected project. The single-project OSS edition lacks the cross-project dimension, although the missing context binding still permits unauthorized reordering across features or environments in the default project. The endpoint changes only sort_order and does not modify strategy parameters, constraints, or segments. 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-2026-77425)

Affected packages:

- `unleash-server < 8.0.3`

Patched in:

- `unleash-server 8.0.3`

Source: https://github.com/advisories/GHSA-5ffh-6f9q-5hhr