Unleash up to 8.0.2 Strategy Sort /api/admin/projects unprotectedUpdateStrategiesSortOrder improper authorization

Summaryinfo

A vulnerability marked as problematic has been reported in Unleash up to 8.0.2. Affected by this vulnerability is the function unprotectedUpdateStrategiesSortOrder of the file /api/admin/projects of the component Strategy Sort. This manipulation causes improper authorization. This vulnerability is tracked as CVE-2026-77425. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Unleash up to 8.0.2. Affected by this vulnerability is the function unprotectedUpdateStrategiesSortOrder of the file /api/admin/projects of the component Strategy Sort. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-77425 since 08/20/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 8.0.3 eliminates this vulnerability.

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Productinfo

Name

• Unleash

Version

• 8.0.0
• 8.0.1
• 8.0.2

Website

• Product: https://github.com/Unleash/unleash/

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