Description (CNA)
Incorrect Authorization vulnerability in ash-project ash_sql allows a caller in a schema-based multitenant application to receive aggregate values computed from another tenant's rows. When an aggregate is computed over a distinct query, AshSql.AggregateQuery.add_single_aggs/5 rebuilds the outer query from query.from.source alone, which is only the {table, schema} tuple and does not carry query.prefix or query.from.prefix. For strategy(:context) multitenancy those hold the tenant schema, so the rebuilt outer query reads the repo's default schema while the inner correlated subquery still reads the tenant schema, and the two are joined only on primary key. The aggregate, and any relationship join added off the prefix-less binding, is then computed against the wrong tenant's rows. The neighbouring limit and exists branches instead wrap the query with subquery/1, which preserves the prefix. This issue affects ash_sql: from 0.1.0 before 0.7.1.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ash-project / ash_sql | affected 0.1.0 before 0.7.1 |
| ash-project / ash_sql | affected dd092ed273dec7bd2194352f24a39229fc8ae68b before 3d95478cc9e1d5bfaf6144fe9b9793f29e5ab889 |
CWE
CWE-863
References
- https://github.com/ash-project/ash_sql/security/advisories/GHSA-ww8j-58rc-f8h3
- https://cna.erlef.org/cves/CVE-2026-81318.html
- https://osv.dev/vulnerability/EEF-CVE-2026-81318
- https://github.com/ash-project/ash_sql/commit/3d95478cc9e1d5bfaf6144fe9b9793f29e5ab889
ADP enrichment
No English description supplied.