AshSql.Join.related_query/3 skips the caller-supplied exists predicate for such relationships and delegates it to limit_from_many/5. When the relationship's own filter or sort references parent(...), limit_from_many/5 takes a branch that drops both the limit and the predicate, emitting a bare correlated EXISTS with no predicate. The check then matches any record that has any related row. Most severely, when the expression backs a policy (for example authorize_if expr(exists(memberships, user_id == ^actor(:id)))), the actor-scoping condition disappears and the policy passes for any actor with any related row.
This issue affects ash_sql: from 0.4.1 before 0.7.1.
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
No advisories yet.
Sun, 30 Aug 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Incorrect Authorization vulnerability in ash-project ash_sql allows a caller to bypass a scoping or authorization filter expressed as exists/2 over a relationship that declares both a limit (or from_many?) and a parent(...)-referencing filter or sort. AshSql.Join.related_query/3 skips the caller-supplied exists predicate for such relationships and delegates it to limit_from_many/5. When the relationship's own filter or sort references parent(...), limit_from_many/5 takes a branch that drops both the limit and the predicate, emitting a bare correlated EXISTS with no predicate. The check then matches any record that has any related row. Most severely, when the expression backs a policy (for example authorize_if expr(exists(memberships, user_id == ^actor(:id)))), the actor-scoping condition disappears and the policy passes for any actor with any related row. This issue affects ash_sql: from 0.4.1 before 0.7.1. | |
| Title | exists/2 predicate silently dropped on limited relationships with a parent() filter in AshSql | |
| First Time appeared |
Ash-project
Ash-project ash Sql |
|
| Weaknesses | CWE-863 | |
| CPEs | cpe:2.3:a:ash-project:ash_sql:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Ash-project
Ash-project ash Sql |
|
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: EEF
Published:
Updated: 2026-08-30T12:01:23.862Z
Reserved: 2026-08-30T04:45:01.559Z
Link: CVE-2026-77454
No data.
Status : Received
Published: 2026-08-30T12:17:17.273
Modified: 2026-08-30T12:17:17.273
Link: CVE-2026-77454
No data.
OpenCVE Enrichment
Updated: 2026-08-30T14:00:15Z