OpenFGA: Cache-key delimiter injection in openfga/openfga shared-iterator and v2 iterator caches enables intra-store authorization-decision poisoning

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Summary

CVECVE-2026-48096
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-10 16:17:09 UTC
Updated2026-06-12 00:46:45 UTC
DescriptionOpenFGA is an authorization/permission engine built for developers. Prior to version 1.16.0, 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. This issue has been patched in version 1.16.0.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

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

EPSS: 0.000930000 probability, percentile 0.007440000 (date 2026-06-18)

Problem Types: CWE-345 | CWE-668 | CWE-345 CWE-345: Insufficient Verification of Data Authenticity | CWE-668 CWE-668: Exposure of Resource to Wrong Sphere

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1[email protected]Secondary5MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED5MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openfga Helm Charts All All All All
Application Openfga Openfga All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Openfga Openfga affected < 1.16.0 Not specified

References

ReferenceSourceLinkTags
github.com/openfga/openfga/releases/tag/v1.16.0 [email protected] github.com Product, Release Notes
github.com/openfga/openfga/security/advisories/GHSA-8396-jffm-qx4w [email protected] github.com Vendor Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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