Medium 5.9Published Aug 9, 2026

CVE-2026-69659Memory exhaustion via unbounded deserialization of keyset pagination cursors in Ash.Page.Keyset

Updated under an hour ago (2026-10-19 06:20 UTC)

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Every CVE for ash-project ash

Exploited in the last 30 days

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: 5.9 MEDIUM (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: EEF
NVD analysis: Analyzed
Record last updated: Aug 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ash-project ash ash-project:ash	from 1.17.0 before 3.31.1	CNA record
ash-hq ash_framework ash-hq:ash_framework	from 1.17.0 before 3.31.1	NVD

References

https://github.com/ash-project/ash/security/advisories/GHSA-j35q-v8h8-7mwqrelated, vendor-advisory, patch
https://cna.erlef.org/cves/CVE-2026-69659.htmlrelated, third-party-advisory
https://osv.dev/vulnerability/EEF-CVE-2026-69659related, third-party-advisory, patch
https://github.com/ash-project/ash/commit/1816b103af975221210478d61db20adcea700319patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.