CVE-2026-80223: CWE-863 Incorrect Authorization in ash-project ash_graphql
Description
CVE-2026-80223 is an incorrect authorization vulnerability in ash-project's ash_graphql component. It allows an authenticated subscriber in one tenant to receive records belonging to another tenant via GraphQL subscriptions. The flaw arises because tenant scoping is applied during query building and data-layer prefixing, but not during in-memory policy evaluation of subscription notifications. This leads to cross-tenant data leakage when subscription notifications are authorized in memory without tenant checks. The issue affects versions from 1.4.0 up to but not including 1.11.0.
CVSS v4.0
Score 7.1high
Affected software
ash-project
ash_graphql
ash-project
ash_graphql
cpe:2.3:a:ash-project:ash_graphql:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in ash_graphql (CVE-2026-80223) involves incorrect authorization in the subscription resolver (AshGraphql.Graphql.Resolver). The resolver authorizes notification payloads in memory by evaluating read policy filters without tenant conditions, since multitenancy is enforced only at query build and data-layer prefix time, not inside the in-memory filter evaluation. Consequently, notifications intended for one tenant can be delivered to subscribers of another tenant if the policy filter evaluates to true. The single-notification clause lacks any tenant guard, and the batched notification clause only checks the first notification's tenant, leaving other notifications unchecked. This flaw affects versions >=1.4.0 and <1.11.0 of ash_graphql.
Potential Impact
An authenticated subscriber in one tenant can receive data records from another tenant via GraphQL subscriptions, resulting in unauthorized data disclosure across tenant boundaries. This compromises tenant isolation and confidentiality in multi-tenant deployments of ash_graphql.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is documented in the provided data. Users should monitor the vendor's advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- EEF
- Date Reserved
- 2026-08-30T15:30:02.097Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9478a8acd9273b49e0bf52
Added to database: 08/30/2026, 18:38:32 UTC
Last enriched: 09/07/2026, 15:41:53 UTC
Last updated: 10/13/2026, 18:48:24 UTC
Views: 120
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