---
cve: "CVE-2026-81316"
severity: "LOW"
cvss: 2.1
epss: "3.3%"
vendor: "ash-project"
kev: false
exploited: false
published: "2026-08-30 12:17:18"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T05:00:47+02:00"
---

# CVE-2026-81316

> 2.1 LOW · 🧪 PoC

## Beschreibung

Incorrect Authorization vulnerability in ash-project ash_sql allows a caller to receive an aggregate value computed over rows a more restrictive filter should have excluded, disclosing counts, sums, or lists across an authorization or tenancy boundary.

AshSql.Aggregate.different_queries?/2 reports two aggregate queries as different only when their filter and their sort both differ. Aggregate queries rarely carry a sort, so two aggregates that share a name but carry entirely different filters compare as identical. The colliding aggregate keeps its name and is treated as already computed, and select_aggregates returns the first-registered variant's value. The same name reaches the builder twice with different filters when actor or tenant context is stamped into each aggregate's query, so a narrowly filtered aggregate can be served the value of a previously registered broad one.

This issue affects ash_sql: from 0.1.0 before 0.7.1.

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- cfe94c67484270db0f46384bd35cf1fbad8793d5 (Commit)
- 4b95468e5434a3526571414219719c9518be6694 (Commit)

## Referenzen

- <https://github.com/ash-project/ash_sql/security/advisories/GHSA-v7pf-wjxc-7j5m>
- <https://cna.erlef.org/cves/CVE-2026-81316.html>
- <https://osv.dev/vulnerability/EEF-CVE-2026-81316>
- <https://github.com/ash-project/ash_sql/commit/4b95468e5434a3526571414219719c9518be6694>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-81316) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_