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CVE-2026-77426: Unleash: Missing await on permission check + cross-project IDOR in admin API

September 22, 2026

Multiple authorization vulnerabilities in Unleash admin API, including a critical missing await that completely bypasses a permission check.

References

  • github.com/Unleash/unleash/commit/7bb2829fc40791aa478e8ffca149c11b0f9cb05a
  • github.com/Unleash/unleash/commit/ace121c922d2e3eb6f68d95b0b6ab2fc8d824ea1
  • github.com/Unleash/unleash/commit/bea7effd3687425630423f662136d548e100154d
  • github.com/Unleash/unleash/commit/c93a963e95e1b7bf1bca2a7729282a48d0eb2f6a
  • github.com/Unleash/unleash/commit/dd61d0e10f5977a2e5de78df467c3a17c09fbcef
  • github.com/Unleash/unleash/releases/tag/v8.0.3
  • github.com/Unleash/unleash/security/advisories/GHSA-72h8-wp98-7hch
  • github.com/advisories/GHSA-72h8-wp98-7hch
  • nvd.nist.gov/vuln/detail/CVE-2026-77426

Code Behaviors & Features

Detect and mitigate CVE-2026-77426 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 8.0.3

Fixed versions

  • 8.0.3

Solution

Upgrade to version 8.0.3 or above.

Impact 7.1 HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-639: Authorization Bypass Through User-Controlled Key
  • CWE-862: Missing Authorization

Source file

npm/unleash-server/CVE-2026-77426.yml

Spotted a mistake? Edit the file on GitLab.

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