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CVE-2026-48096— OpenFGA: Cache-key delimiter injection in openfga/openfga shared-iterator and v2 iterator caches enables intra-store authorization-decision poisoning

Quick assessment

Affected
openfga openfga
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenFGA是OpenFGA开源的一款为开发人员构建并受 Google Zanzibar 启发的高性能和灵活的授权/许可引擎。 OpenFGA 1.16.0之前版本存在数据伪造问题漏洞，该漏洞源于启用迭代器缓存时两个不同的检查请求可能产生相同的缓存键，可能导致OpenFGA为后续请求重用早期缓存的结果。

CVSS 5.0 · Medium EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
openfga openfga < 1.16.0 affected
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I. Basic Information for CVE-2026-48096

Vulnerability Information
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Vulnerability Title
OpenFGA: Cache-key delimiter injection in openfga/openfga shared-iterator and v2 iterator caches enables intra-store authorization-decision poisoning
Source: CVE Program / CVE List V5
Vulnerability Description
OpenFGA 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
OpenFGA 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenFGA是OpenFGA开源的一款为开发人员构建并受 Google Zanzibar 启发的高性能和灵活的授权/许可引擎。 OpenFGA 1.16.0之前版本存在数据伪造问题漏洞，该漏洞源于启用迭代器缓存时两个不同的检查请求可能产生相同的缓存键，可能导致OpenFGA为后续请求重用早期缓存的结果。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
openfga openfga < 1.16.0 -

II. Public POCs for CVE-2026-48096

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III. Intelligence Information for CVE-2026-48096

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Vendor Advisories for CVE-2026-48096 (1)

Vendor Pages for CVE-2026-48096 (1)

IV. Related Vulnerabilities

Same product: openfga
Same vendor: openfga
Same weakness: CWE-345

V. Comments for CVE-2026-48096

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