# CVE-2026-80223 — ash-project ash_graphql

> As of 2026-08-30, CVE-2026-80223 is a High-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in ash-project ash_graphql, CVSS v4.0 7.1. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-80223 as of 2026-08-30; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-30

## What is CVE-2026-80223?

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.

The record classifies CVE-2026-80223 under weakness class [CWE-863](https://intel.threadlinqs.com/cwe/CWE-863). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 36 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 7.1 — High (derived from score) (`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`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-30

## Is CVE-2026-80223 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [ash-project](https://intel.threadlinqs.com/vendors/ash-project): ash_graphql

## How to fix CVE-2026-80223

No vendor patch reference has been recorded for CVE-2026-80223 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-80223

No threat campaign in the Threadlinqs corpus currently references CVE-2026-80223, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD. Last verified by Threadlinqs on 2026-08-31. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — vendor advisory](https://github.com/ash-project/ash_graphql/security/advisories/GHSA-rcqc-59g2-gjg2)
- [github.com — patch](https://github.com/ash-project/ash_graphql/commit/6e30b8b5a04bdeaed5d7514caa6b2d056d8d993e)

**Other references**

- [cna.erlef.org — related](https://cna.erlef.org/cves/CVE-2026-80223.html)
- [osv.dev — related](https://osv.dev/vulnerability/EEF-CVE-2026-80223)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-80223
Full detection coverage and IOCs for threats exploiting CVE-2026-80223 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp