GHSA-8396-jffm-qx4w

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    GHSA-8396-jffm-qx4w

    Published: 11 Jun 2026Last Modified: 21 Jul 2026

    Summary: OpenFGA has cache-key delimiter injection in shared-iterator and v2 iterator that caches enables intra-store authorization-decision poisoning

    Details: ### Description In OpenFGA, when iterator caching is enabled, two distinct check requests can produce the same cache key, leading to OpenFGA reusing an earlier cached result for a subsequent request. ### Preconditions This applies if the following preconditions are present: - FGA runs with SharedIteratorCache enabled, - FGA runs with ListObjectsIteratorCache enabled. ### Fix Upgrade to version 1.16.0 or greater. ### Acknowledgements OpenFGA would like to thank @j4xT for the discovery and the detailed report.

    References: https://github.com/openfga/openfga/security/advisories/GHSA-8396-jffm-qx4w, https://nvd.nist.gov/vuln/detail/CVE-2026-48096, https://github.com/openfga/openfga, https://github.com/openfga/openfga/releases/tag/v1.16.0

    Affected packages

    Package

    Name: github.com/openfga/openfga

    Purl: pkg:golang/github.com/openfga/openfga

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.16.0

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High