---
id: CVE-2026-69659
title: >-
  Uncontrolled Resource Consumption vulnerability in ash-project ash allows an
  attacker to exhaust the memory of the node via a crafted keyset pagination
  cursor.


  Read actions with keyset pagination deserialize the client-supplied page[:af…
summary: >-
  Uncontrolled Resource Consumption vulnerability in ash-project ash allows an
  attacker to exhaust the memory of the node via a crafted keyset pagination
  cursor.


  Read actions with keyset pagination deserialize the client-supplied page[:af…
severity: none
cwe:
  - CWE-502
published: '2026-08-09'
updated: '2026-08-09'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69659'
references:
  - url: 'https://cna.erlef.org/cves/CVE-2026-69659.html'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/ash-project/ash/commit/1816b103af975221210478d61db20adcea700319
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://github.com/ash-project/ash/security/advisories/GHSA-j35q-v8h8-7mwq'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://osv.dev/vulnerability/EEF-CVE-2026-69659'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
tags:
  - nvd
ingestedAt: '2026-08-10T04:38:56.189Z'
epss: 0.00358
epssPercentile: 0.26829
---

## Overview

Uncontrolled Resource Consumption vulnerability in ash-project ash allows an attacker to exhaust the memory of the node via a crafted keyset pagination cursor.

Read actions with keyset pagination deserialize the client-supplied page[:after] or page[:before] cursor in decode_values/2 in lib/ash/page/keyset.ex, which base64-decodes the value and passes it to :erlang.binary_to_term/2 without bounding its size. The Erlang external term format supports zlib-compressed payloads, which the decoder inflates transparently, so a cursor of a few kilobytes can allocate tens of megabytes of heap in a single call. Ash itself only ever encodes cursors uncompressed, so the decoder accepts a term shape its encoder never produces. Concurrent requests aggregate these allocations and can terminate the node.

This issue affects ash: from 1.17.0 before 3.31.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.