Vulnerability-Lookup

CVE-2026-80223 (GCVE-0-2026-80223)

Vulnerability from cvelistv5 – Published: 2026-08-30 18:27 – Updated: 2026-08-30 18:27

Title

Cross-tenant subscription disclosure in AshGraphql authorizes notifications in memory without a tenant-scoped read

Summary

Incorrect Authorization vulnerability in ash-project ash_graphql allows an authenticated subscriber in one tenant to receive another tenant's records over GraphQL subscriptions. The subscription resolver in AshGraphql.Graphql.Resolver authorizes each notification payload in memory: its fast path calls Ash.can/3 with run_queries?: false, which evaluates the read policy filter against the in-memory record via Ash.Expr.eval/2 and never issues a query. Ash applies multitenancy at query-build and data-layer-prefix time, not inside query.filter, so the evaluated policy carries no tenant condition and a tenant-B notification routed to a tenant-A subscriber is emitted whenever the policy filter is true. The single-notification clause has no tenant guard at all, and the batched clause checks only the head of the notification list, so non-head entries authorize purely in memory. A tenant-scoped read is reached only when filter evaluation fails. This issue affects ash_graphql: from 1.4.0 before 1.11.0.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CWE

CWE-863 - Incorrect Authorization

Assigner

EEF mitre root

References

4 references

URL	Tags
https://github.com/ash-project/ash_graphql/securi…	vendor-advisoryrelated
https://cna.erlef.org/cves/CVE-2026-80223.html	related
https://osv.dev/vulnerability/EEF-CVE-2026-80223	related
https://github.com/ash-project/ash_graphql/commit…	patch

Impacted products

2 products

Vendor	Product	Version	CPE status
ash-project	ash_graphql	Affected: 1.4.0 , < 1.11.0 (semver) cpe:2.3:a:ash-project:ash_graphql::::::::
ash-project	ash_graphql	Affected: 4c377e541a2adb6befc651f3dccc6a797bc58ba9 , < 6e30b8b5a04bdeaed5d7514caa6b2d056d8d993e (git) cpe:2.3:a:ash-project:ash_graphql::::::::

Credits

Peter Ullrich Peter Ullrich Zach Daniel / Ash Project Jonatan Männchen / EEF

Show details on NVD website

JSON

To clipboard

{
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            "\u0027Elixir.AshGraphql.Graphql.Resolver\u0027"
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          "packageName": "ash_graphql",
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Ash applies multitenancy at query-build and data-layer-prefix time, not inside query.filter, so the evaluated policy carries no tenant condition and a tenant-B notification routed to a tenant-A subscriber is emitted whenever the policy filter is true. The single-notification clause has no tenant guard at all, and the batched clause checks only the head of the notification list, so non-head entries authorize purely in memory. 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  }
}

FKIE_CVE-2026-80223

Vulnerability from fkie_nvd - Published: 2026-08-30 19:17 - Updated: 2026-08-30 19:17

Severity

7.1 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://cna.erlef.org/cves/CVE-2026-80223.html
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://github.com/ash-project/ash_graphql/commit/6e30b8b5a04bdeaed5d7514caa6b2d056d8d993e
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://github.com/ash-project/ash_graphql/security/advisories/GHSA-rcqc-59g2-gjg2
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://osv.dev/vulnerability/EEF-CVE-2026-80223

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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      "affectedData": [
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          "collectionURL": "https://repo.hex.pm",
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            "cpe:2.3:a:ash-project:ash_graphql:*:*:*:*:*:*:*:*"
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          "packageName": "ash_graphql",
          "packageURL": "pkg:hex/ash_graphql",
          "product": "ash_graphql",
          "programFiles": [
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          ],
          "repo": "https://github.com/ash-project/ash_graphql",
          "vendor": "ash-project",
          "versions": [
            {
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              "status": "affected",
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              "versionType": "semver"
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          ]
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          "versions": [
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    }
  ],
  "id": "CVE-2026-80223",
  "lastModified": "2026-08-30T19:17:29.220",
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          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-30T19:17:29.220",
  "references": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://cna.erlef.org/cves/CVE-2026-80223.html"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://github.com/ash-project/ash_graphql/commit/6e30b8b5a04bdeaed5d7514caa6b2d056d8d993e"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://github.com/ash-project/ash_graphql/security/advisories/GHSA-rcqc-59g2-gjg2"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-80223"
    }
  ],
  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "type": "Secondary"
    }
  ]
}

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-80223 (GCVE-0-2026-80223)

FKIE_CVE-2026-80223

Tags

Sightings

Nomenclature