Memory exhaustion via unbounded deserialization of keyset pagination cursors in Ash.Page.Keyset (CVE-2026-69659) | HOL Guard CVE

Medium · CVSS 5.9CVE-2026-69659

Memory exhaustion via unbounded deserialization of keyset pagination cursors in Ash.Page.Keyset

Answer in brief

CVE-2026-69659 records a Medium severity (CVSS 5.9) vulnerability in Memory exhaustion via unbounded deserialization of keyset pagination cursors in Ash.Page.Keyset. The current sources do not mark it as known exploited. The current feed maps ash-project/ash (generic), ash-project/ash (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 9, 2026Updated Aug 18, 2026Source checked Sep 23, 2026First seen by HOL Aug 9, 2026Material review Aug 18, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.9
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 5.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ash-project/ash (generic), ash-project/ash (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:ash-hq:ash_framework::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ash-project/ashgeneric	>=1.17.0 <3.31.1	3.31.1
ash-project/ashgeneric	>=f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9 <1816b103af975221210478d61db20adcea700319	1816b103af975221210478d61db20adcea700319

Recommended response

Check inventory. Check lockfiles and deployed manifests for ash-project/ash, ash-project/ash.
Review the reported fix. Update ash-project/ash to 3.31.1; ash-project/ash to 1816b103af975221210478d61db20adcea700319 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 9, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 9, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.