EEF-CVE-2026-77454
- Source
- https://cna.erlef.org/osv/EEF-CVE-2026-77454.html
- Import Source
- https://cna.erlef.org/osv/EEF-CVE-2026-77454.json
- JSON Data
- https://api.osv.dev/v1/vulns/EEF-CVE-2026-77454
- Aliases
-
- CVE-2026-77454
- GHSA-8v9m-8pxv-738c
- Published
- 2026-08-30T12:01:23.862Z
- Modified
- 2026-08-30T12:25:32.699238515Z
- Severity
-
- 5.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- exists/2 predicate silently dropped on limited relationships with a parent() filter in AshSql
- Details
-
Summary
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.
Configuration
An application must use exists/2 (in a filter or a policy) over a relationship that declares both a limit or from_many? and a filter or sort that references parent(...). The predicate supplied to exists/2 is the one that is dropped.
- Database specific
{ "cpe_ids": [ "cpe:2.3:a:ash-project:ash_sql:*:*:*:*:*:*:*:*" ], "capec_ids": [ "CAPEC-1" ], "cwe_ids": [ "CWE-863" ] }- References
- Credits
-
-
- Peter Ullrich - FINDER
-
- Peter Ullrich - REPORTER
-
- Zach Daniel / Ash Project - REMEDIATION_DEVELOPER
-
- Jonatan Männchen / EEF - COORDINATOR
-
Affected packages
Hex / ash_sql
Package
- Name
- ash_sql
- Purl
- pkg:hex/ash_sql