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CVE-2026-67579— Filter expression injection via forged keyset pagination cursor in Ash

Quick assessment

Affected
ash-project ash
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ash Framework是Ash Framework组织的一款基于Elixir的开发框架。 Ash Framework 1.17.0版本至3.31.3之前版本存在安全漏洞，该漏洞源于对keyset分页游标的不可信数据反序列化处理不当，可能导致未经身份验证的攻击者通过伪造游标注入过滤器表达式，造成SQL注入或代码执行。

CVSS 7.5 · High EPSS 0.61% · P48

Affected Version Matrix 2

VendorProduct Version RangeStatus
ash-project ash 1.17.0< 3.31.3 affected
f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9< 91874dd5435bc0ffebd8a254acfa573b39b74520 affected
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I. Basic Information for CVE-2026-67579

Vulnerability Information
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Vulnerability Title
Filter expression injection via forged keyset pagination cursor in Ash
Source: CVE Program / CVE List V5
Vulnerability Description
Deserialization of Untrusted Data vulnerability in ash-project ash allows an unauthenticated attacker to inject a filter expression through a forged keyset pagination cursor, resulting in SQL injection or code execution depending on the data layer. Read actions with keyset pagination decode the client-supplied page[:after] or page[:before] cursor in decode_values/2 in lib/ash/page/keyset.ex using non_executable_binary_to_term/2 with [:safe]. That guard blocks new atoms, funs, and ports, but not a struct built from atoms already interned in a running Ash application, so a decoded %Ash.Query.Call{} expression survives and is spliced into the keyset filter as a comparison value in do_filters/4 and evaluated. Because the cursor bypasses the Ash.Expr macro, the runtime never applies the private?/public? gate that would otherwise reject it. On AshPostgres the injected fragment is inlined into the SQL query; on the ETS and Simple data layers it is evaluated in-process as an arbitrary function call. This issue affects ash: from 1.17.0 before 3.31.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Ash Framework 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ash Framework是Ash Framework组织的一款基于Elixir的开发框架。 Ash Framework 1.17.0版本至3.31.3之前版本存在安全漏洞，该漏洞源于对keyset分页游标的不可信数据反序列化处理不当，可能导致未经身份验证的攻击者通过伪造游标注入过滤器表达式，造成SQL注入或代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ash-project ash 1.17.0 ~ 3.31.3 cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*
ash-project ash f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9 ~ 91874dd5435bc0ffebd8a254acfa573b39b74520 cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-67579

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 10907 chars
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III. Intelligence Information for CVE-2026-67579

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Patches & Fixes for CVE-2026-67579 (1)

Vendor Advisories for CVE-2026-67579 (2)

News Coverage for CVE-2026-67579 (1)

IV. Related Vulnerabilities

Same product: ash
Same vendor: ash-project
Same weakness: CWE-502

V. Comments for CVE-2026-67579

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