CVE-2026-77454

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Source

https://cve.org/CVERecord?id=CVE-2026-77454

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77454.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-77454

Aliases

EEF-CVE-2026-77454
GHSA-8v9m-8pxv-738c

Published

2026-08-30T12:01:23Z

Modified

2026-09-03T03:30:53Z

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

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.

Database specific

{
    "cna_assigner": "EEF",
    "cwe_ids": [
        "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77454.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "e26a63b29bd7501505fafd726f14262cdc3b6629"
                },
                {
                    "fixed": "865fdd4e5e70724a23b19c048e6768c31d2209ab"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/ash-project/ash_sql

Affected ranges

Type

GIT

Repo

https://github.com/ash-project/ash_sql

Events

Introduced

24e3c61e63258bfd9592ccc5a51a3d7148699914

Fixed

cfe94c67484270db0f46384bd35cf1fbad8793d5

Fixed

865fdd4e5e70724a23b19c048e6768c31d2209ab

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0.4.1"
        },
        {
            "fixed": "0.7.1"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

v0.*

v0.4.1

v0.4.2

v0.4.3

v0.4.4

v0.4.5

v0.5.0

v0.5.1

v0.5.2

v0.5.3

v0.5.4

v0.5.5

v0.6.0

v0.6.1

v0.6.2

v0.6.3

v0.6.4

v0.6.5

v0.6.6

v0.6.7

v0.6.8

v0.6.9

v0.7.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77454.json"