Vulnerability-Lookup

CVE-2026-34972 (GCVE-0-2026-34972)

Vulnerability from cvelistv5 – Published: 2026-04-06 20:41 – Updated: 2026-04-07 14:01

Title

OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision

Summary

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. From 1.8.0 to 1.13.1, under specific conditions, BatchCheck calls with multiple checks sent for the same object, relation, and user combination can result in improper policy enforcement. This vulnerability is fixed in 1.14.0.

Severity

5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/openfga/openfga/security/advis…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
openfga	openfga	Affected: >= 1.8.0, < 1.14.0

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-34972

Vulnerability from fkie_nvd - Published: 2026-04-06 21:16 - Updated: 2026-06-17 10:39

Severity

5.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/openfga/openfga/security/advisories/GHSA-jwvj-g8pc-cx45	Vendor Advisory

Impacted products

	Vendor	Product	Version
	openfga	helm_charts	*
	openfga	openfga	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "openfga",
          "vendor": "openfga",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.8.0, \u003c 1.14.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openfga:helm_charts:*:*:*:*:*:openfga:*:*",
              "matchCriteriaId": "EABAAAEF-53E1-4ED5-9680-9748EF76A60A",
              "versionEndExcluding": "0.2.62",
              "versionStartIncluding": "0.2.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9D29D1A0-093C-4775-9409-BED9C6D4CE7E",
              "versionEndExcluding": "1.14.0",
              "versionStartIncluding": "1.8.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
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    {
      "lang": "en",
      "value": "OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. From 1.8.0 to 1.13.1, under specific conditions, BatchCheck calls with multiple checks sent for the same object, relation, and user combination can result in improper policy enforcement. This vulnerability is fixed in 1.14.0."
    }
  ],
  "id": "CVE-2026-34972",
  "lastModified": "2026-06-17T10:39:55.193",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
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        "impactScore": 3.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 8.8,
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          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
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          "version": "3.1"
        },
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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            }
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    }
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}

GHSA-JWVJ-G8PC-CX45

Vulnerability from github – Published: 2026-04-07 18:05 – Updated: 2026-04-07 18:05

Summary

OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision

Details

Description

In OpenFGA, under specific conditions, BatchCheck calls with multiple checks sent for the same object, relation, and user combination can result in improper policy enforcement.

Am I affected?

You are affected if you meet the following preconditions: 1. You execute BatchCheck operations which rely on context. 2. Multiple checks are sent within a single BatchCheck operation for the same user/object/relation combination, each containing context. 3. The contexts between those checks differ in a specific way

Fix

Upgrade to OpenFGA v1.14.0

Acknowledgement

OpenFGA would like to thank @bugbunny-research for the discovery and detailed report.

Severity

5.0 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.13.1"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openfga/openfga"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.8.0"
            },
            {
              "fixed": "1.14.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34972"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-07T18:05:16Z",
    "nvd_published_at": "2026-04-06T21:16:19Z",
    "severity": "MODERATE"
  },
  "details": "### Description\n\nIn OpenFGA, under specific conditions, BatchCheck calls with multiple checks sent for the same object, relation, and user combination can result in improper policy enforcement.\n\n### Am I affected?\n\nYou are affected if you meet the following preconditions:\n1. You execute **BatchCheck** operations which rely on context. \n2. Multiple checks are sent within a single BatchCheck operation for the same user/object/relation combination, each containing context.\n3. The contexts between those checks differ in a specific way\n\n### Fix\nUpgrade to OpenFGA v1.14.0\n\n### Acknowledgement\nOpenFGA would like to thank @bugbunny-research for the discovery and detailed report.",
  "id": "GHSA-jwvj-g8pc-cx45",
  "modified": "2026-04-07T18:05:16Z",
  "published": "2026-04-07T18:05:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openfga/openfga/security/advisories/GHSA-jwvj-g8pc-cx45"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34972"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openfga/openfga"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenFGA\u0027s BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-34972 (GCVE-0-2026-34972)

FKIE_CVE-2026-34972

GHSA-JWVJ-G8PC-CX45

Description

Am I affected?

Fix

Acknowledgement

Tags

Sightings

Nomenclature