What’s Vulnerable › Vulnerabilities

CVE-2026-76910: Unleash: Clone-feature lets a user copy a feature from a project they cannot read

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-22 · updated 2026-09-23
• Weakness: CWE-639

Description

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.

Affected products

• unleash: before 8.0.3

References

• https://github.com/Unleash/unleash/commit/2dc6ac0e8ba524ec7a2e9bc96a0e01d9d6f5a35a
• https://github.com/Unleash/unleash/releases/tag/v8.0.3
• https://github.com/Unleash/unleash/security/advisories/GHSA-8xcj-9hfr-fh9j
• https://github.com/Unleash/unleash/security/advisories/GHSA-8xcj-9hfr-fh9j

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