CVE-2026-69659Public exploit

Node termination via compressed keyset cursor deserialization

Published Aug 9, 2026 · Updated Aug 9, 2026

Uncontrolled resource consumption in Ash 1.17.0 through 3.31.0 allows attackers to terminate the node via a crafted keyset cursor. Ash.Page.Keyset.decode_values/2 base64-decodes the cursor and passes it to binary_to_term/2 without a size bound, allowing compressed terms to expand sharply in memory. Reachability requires keyset pagination and a client-supplied after or before value; concurrent small requests or one body-carried cursor can terminate the node.

CVSS severity5.9
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Ash 1.17.0 through 3.31.0 allows attackers to terminate the node via a crafted keyset cursor. Ash.Page.Keyset.decode_values/2 base64-decodes the cursor and passes it to binary_to_term/2 without a size bound, allowing compressed terms to expand sharply in memory. Reachability requires keyset pagination and a client-supplied after or before value; concurrent small requests or one body-carried cursor can terminate the node.

The record

CVE
CVE-2026-69659
Published
Aug 9, 2026
Updated
Aug 9, 2026
Vendor
Ash Framework
Product
Ash
Classifications
CWE-502, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.17.0 <3.31.1
  2. Affected versionversion=f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9 <1816b103af975221210478d61db20adcea700319

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Ash Framework · Ashversion=1.17.0 <3.31.1; version=f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9 <1816b103af975221210478d61db20adcea700319

Published CVSS scores

5.9Erlang Ecosystem FoundationCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1499.004Application or System Exploitation Flood

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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