# CVE-2026-70395 — ash-project ash

> As of 2026-08-10, CVE-2026-70395 is a Low-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in ash-project ash, CVSS v4.0 2.1, EPSS 0.1% (3.6th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-70395 as of 2026-08-10; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-10

## What is CVE-2026-70395?

Improper Neutralization of Special Elements in Data Query Logic vulnerability in ash-project ash allows an attacker to forge a relationship to a record they cannot name, and to recover the secret value used to look it up. When manage_relationship is used with on_lookup: :relate on a belongs_to relationship, the client-supplied lookup value is passed to Ash.Query.filter/2 without being cast to the attribute type. A nested map submitted where a scalar is expected is therefore interpreted as a filter predicate rather than a literal, so a lookup for a specific record becomes a query for any record matching a condition. The same path omits Ash.Query.limit(1), leaving Ash.read_one/2 able to distinguish no match from one match from several, which turns comparison predicates into an oracle for the lookup value. Authorization is unaffected; the destination read policy still applies. This issue affects ash: from 1.52.0-rc.11 before 3.31.1.

The record classifies CVE-2026-70395 under weakness class [CWE-943](https://cwe.mitre.org/data/definitions/943.html). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 57 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 2.1 — Low (derived from score) (`CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 3.6% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 1.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-09, last modified 2026-08-10

## Is CVE-2026-70395 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [ash-project](https://intel.threadlinqs.com/vendors/ash-project): ash

## How to fix CVE-2026-70395

No vendor patch reference has been recorded for CVE-2026-70395 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-70395

No threat campaign in the Threadlinqs corpus currently references CVE-2026-70395, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-08-11. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — related](https://github.com/ash-project/ash/security/advisories/GHSA-vvp6-3wv6-833j)
- [github.com — patch](https://github.com/ash-project/ash/commit/09f42593035bceb0f6153dd7ee45cc49d108300a)

**Other references**

- [cna.erlef.org — related](https://cna.erlef.org/cves/CVE-2026-70395.html)
- [osv.dev — related](https://osv.dev/vulnerability/EEF-CVE-2026-70395)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-70395
Full detection coverage and IOCs for threats exploiting CVE-2026-70395 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp