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CVE-2026-61709 OpenFGA: ListUsers returns a deliberately-excluded user (authorization-decision over-inclusion) when a `but not` exclusion under a type-bound wildcard is intersected (`and`) with another relation that also grants that user

🗓️ 16 Sep 2026 14:05:35Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 49 Views

OpenFGA ListUsers returns excluded user via type-bound wildcard intersection before 1.18.1.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cgr
Chainguard
CVE-2026-61709 vulnerabilities
17 Sep 202620:54
–cgr
circl
Circl
CVE-2026-61709
16 Sep 202623:32
–circl
cve
CVE
CVE-2026-61709
16 Sep 202614:05
–cve
euvd
EUVD
EUVD-2026-80777
16 Sep 202614:05
–euvd
github
Github Security Blog
OpenFGA: ListUsers returns a deliberately-excluded user when a `but not` exclusion under a type-bound wildcard is intersected (`and`) with another relation that also grants that user
16 Sep 202622:15
–github
nvd
NVD
CVE-2026-61709
16 Sep 202615:17
–nvd
osv
OSV
CGA-27XC-3889-JM6V
17 Sep 202613:39
–osv
osv
OSV
CGA-33JH-2V8M-7X6Q
17 Sep 202613:28
–osv
osv
OSV
CGA-3HJQ-PHX3-VX4H
17 Sep 202611:39
–osv
osv
OSV
CGA-4457-2658-7HRX
17 Sep 202614:55
–osv
Rows per page
[
  {
    "vendor": "openfga",
    "product": "openfga",
    "versions": [
      {
        "version": "< 1.18.1",
        "status": "affected"
      }
    ]
  }
]

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16 Sep 2026 14:05Current
CVSS 3.15.3
EPSS0.00351
SSVC
49