---
cve: "CVE-2026-77426"
severity: "HIGH"
cvss: 7.1
epss: "0.5%"
vendor: "Unleash"
kev: false
exploited: false
published: "2026-09-22 21:17:32"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T15:27:05+02:00"
---

# CVE-2026-77426

> 7.1 HIGH · 🧪 PoC

## Beschreibung

Unleash is an open-source feature management platform. Prior to 8.0.3, the Unleash admin API contains five authorization vulnerabilities. POST /api/admin/segments/strategies assigns the Promise returned by hasPermission without awaiting it, allowing authenticated users to modify segment assignments without UPDATE_FEATURE_STRATEGY permission for the target project and environment. GET /api/admin/projects/:projectId/features/:featureName/environments/:environment/variants does not bind the requested feature to projectId, allowing cross-project variant configuration disclosure. GET .../strategies/:strategyId uses strategyId without validating the project and feature context, allowing cross-project strategy configuration disclosure. getEnvironmentInfo does not validate that the requested feature belongs to the supplied project, allowing cross-project environment information disclosure. PUT /:projectId/tags accepts feature identifiers without verifying that they belong to the URL project, allowing cross-project tag modification. This issue is fixed in version 8.0.3.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 7bb2829fc40791aa478e8ffca149c11b0f9cb05a (Commit)
- ace121c922d2e3eb6f68d95b0b6ab2fc8d824ea1 (Commit)

## Referenzen

- <https://github.com/Unleash/unleash/security/advisories/GHSA-72h8-wp98-7hch>
- <https://github.com/Unleash/unleash/commit/7bb2829fc40791aa478e8ffca149c11b0f9cb05a>
- <https://github.com/Unleash/unleash/commit/ace121c922d2e3eb6f68d95b0b6ab2fc8d824ea1>
- <https://github.com/Unleash/unleash/commit/bea7effd3687425630423f662136d548e100154d>
- <https://github.com/Unleash/unleash/commit/c93a963e95e1b7bf1bca2a7729282a48d0eb2f6a>
- <https://github.com/Unleash/unleash/commit/dd61d0e10f5977a2e5de78df467c3a17c09fbcef>
- <https://github.com/Unleash/unleash/releases/tag/v8.0.3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-77426) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_