CVE-2026-24851Network attack vector

Authorization bypass via stale ordered-iterator tuple

Published Feb 6, 2026 · Updated Feb 6, 2026

Incorrect authorization in OpenFGA 1.8.5 through 1.11.2 allows remote authenticated users to receive incorrect Check decisions. OrderedCombinedIterator advances with Next but fails to reload Head, leaving stale tuple data that causes incorrect traversal during policy evaluation. Reachability requires mixed public and non-public type-bound tuples, including a larger object ID for the same user and relation.

CVSS severity5.8
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in OpenFGA 1.8.5 through 1.11.2 allows remote authenticated users to receive incorrect Check decisions. OrderedCombinedIterator advances with Next but fails to reload Head, leaving stale tuple data that causes incorrect traversal during policy evaluation. Reachability requires mixed public and non-public type-bound tuples, including a larger object ID for the same user and relation.

The record

CVE
CVE-2026-24851
Published
Feb 6, 2026
Updated
Feb 6, 2026
Vendor
OpenFGA
Product
OpenFGA
Classifications
CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.11.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenFGA · OpenFGAversion=< 1.11.3

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.8GitHub CNACVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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