CVE-2026-69659

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-69659.html	Third Party Advisory
https://github.com/ash-project/ash/commit/1816b103af975221210478d61db20adcea700319	Patch
https://github.com/ash-project/ash/security/advisories/GHSA-j35q-v8h8-7mwq	Vendor Advisory Patch
https://osv.dev/vulnerability/EEF-CVE-2026-69659	Third Party Advisory Patch
https://github.com/ash-project/ash/security/advisories/GHSA-j35q-v8h8-7mwq	Vendor Advisory Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:ash-hq:ash_framework:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-09 18:16

Updated : 2026-08-18 15:38

NVD link : CVE-2026-69659

Mitre link : CVE-2026-69659

CVE.ORG link : CVE-2026-69659

JSON object : View

Products Affected

ash-hq

ash_framework

CWE

CWE-502

Deserialization of Untrusted Data

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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.\n\nThis issue affects ash: from 1.17.0 before 3.31.1."}], "lastModified": "2026-08-18T15:38:34.223", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ash-hq:ash_framework:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E6BD669B-1C5C-410A-89F3-4921277EBEEB", "versionEndExcluding": "3.31.1", "versionStartIncluding": "1.17.0"}], "operator": "OR"}]}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}