CVE-2026-67579 (GCVE-0-2026-67579)
Vulnerability from cvelistv5 – Published: 2026-08-12 20:04 – Updated: 2026-08-13 12:44
VLAI
EPSS
VEX
Title
Filter expression injection via forged keyset pagination cursor in Ash
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 12:43 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash/security/advis… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-67579.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-67579 | related |
| https://github.com/ash-project/ash/commit/91874dd… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash |
Affected:
1.17.0 , < 3.31.3
(semver)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
|
| ash-project | ash |
Affected:
f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9 , < 91874dd5435bc0ffebd8a254acfa573b39b74520
(git)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
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"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-67579\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-13T12:43:59.286788Z\"}}}], \"references\": [{\"url\": \"https://github.com/ash-project/ash/security/advisories/GHSA-3gq3-9xm3-c8v3\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-13T12:44:14.133Z\"}}], \"cna\": {\"title\": \"Filter expression injection via forged keyset pagination cursor in Ash\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Jisung Chae\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Zach Daniel\"}, {\"lang\": \"en\", \"type\": \"analyst\", \"value\": \"Jonatan M\\u00e4nnchen / EEF\"}], \"impacts\": [{\"capecId\": \"CAPEC-586\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-586 Object Injection\"}]}, {\"capecId\": \"CAPEC-66\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-66 SQL Injection\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 7.5, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"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\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/ash-project/ash\", \"vendor\": \"ash-project\", \"modules\": [\"\u0027Elixir.Ash.Page.Keyset\u0027\"], \"product\": \"ash\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.17.0\", \"lessThan\": \"3.31.3\", \"versionType\": \"semver\"}], \"packageURL\": \"pkg:hex/ash\", \"packageName\": \"ash\", \"programFiles\": [\"lib/ash/page/keyset.ex\"], \"collectionURL\": \"https://repo.hex.pm\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"\u0027Elixir.Ash.Page.Keyset\u0027:decode_values/2\"}, {\"name\": \"\u0027Elixir.Ash.Page.Keyset\u0027:do_filters/4\"}]}, {\"cpes\": [\"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/ash-project/ash\", \"vendor\": \"ash-project\", \"modules\": [\"\u0027Elixir.Ash.Page.Keyset\u0027\"], \"product\": \"ash\", \"versions\": [{\"status\": \"affected\", \"version\": \"f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9\", \"lessThan\": \"91874dd5435bc0ffebd8a254acfa573b39b74520\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/ash-project/ash\", \"packageName\": \"ash-project/ash\", \"programFiles\": [\"lib/ash/page/keyset.ex\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"\u0027Elixir.Ash.Page.Keyset\u0027:decode_values/2\"}, {\"name\": \"\u0027Elixir.Ash.Page.Keyset\u0027:do_filters/4\"}]}], \"references\": [{\"url\": \"https://github.com/ash-project/ash/security/advisories/GHSA-3gq3-9xm3-c8v3\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-67579.html\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-67579\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/ash-project/ash/commit/91874dd5435bc0ffebd8a254acfa573b39b74520\", \"tags\": [\"patch\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\\n\\nRead 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.\\n\\nThis issue affects ash: from 1.17.0 before 3.31.3.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eDeserialization 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.\u003c/p\u003e\\n\u003cp\u003eRead actions with keyset pagination decode the client-supplied \u003ccode\u003epage[:after]\u003c/code\u003e or \u003ccode\u003epage[:before]\u003c/code\u003e cursor in \u003ccode\u003edecode_values/2\u003c/code\u003e in \u003ccode\u003elib/ash/page/keyset.ex\u003c/code\u003e using \u003ccode\u003enon_executable_binary_to_term/2\u003c/code\u003e with \u003ccode\u003e[:safe]\u003c/code\u003e. 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 \u003ccode\u003e%Ash.Query.Call{}\u003c/code\u003e expression survives and is spliced into the keyset filter as a comparison value in \u003ccode\u003edo_filters/4\u003c/code\u003e and evaluated. Because the cursor bypasses the \u003ccode\u003eAsh.Expr\u003c/code\u003e macro, the runtime never applies the \u003ccode\u003eprivate?\u003c/code\u003e/\u003ccode\u003epublic?\u003c/code\u003e gate that would otherwise reject it. On AshPostgres the injected \u003ccode\u003efragment\u003c/code\u003e is inlined into the SQL query; on the ETS and Simple data layers it is evaluated in-process as an arbitrary function call.\u003c/p\u003e\\n\u003cp\u003eThis issue affects ash: from 1.17.0 before 3.31.3.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"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.\\n\\nRead 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.\\n\\nThis issue affects ash: from 1.17.0 before 3.31.3.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-502\", \"description\": \"CWE-502 Deserialization of Untrusted Data\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-89\", \"description\": \"CWE-89 Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027)\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"A read action must declare keyset? true in its pagination block, and the application must pass a client-supplied value as the :after or :before page option. The severity of a successful attack depends on the data layer: AshPostgres yields SQL injection, while the ETS and Simple data layers evaluate the injected expression in-process.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eA read action must declare \u003ccode\u003ekeyset? true\u003c/code\u003e in its \u003ccode\u003epagination\u003c/code\u003e block, and the application must pass a client-supplied value as the \u003ccode\u003e:after\u003c/code\u003e or \u003ccode\u003e:before\u003c/code\u003e page option. The severity of a successful attack depends on the data layer: AshPostgres yields SQL injection, while the ETS and Simple data layers evaluate the injected expression in-process.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"A read action must declare `keyset? true` in its `pagination` block, and the application must pass a client-supplied value as the `:after` or `:before` page option. The severity of a successful attack depends on the data layer: AshPostgres yields SQL injection, while the ETS and Simple data layers evaluate the injected expression in-process.\", \"base64\": false}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"3.31.3\", \"versionStartIncluding\": \"1.17.0\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-08-12T20:04:42.256Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-67579\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-13T12:44:48.074Z\", \"dateReserved\": \"2026-08-09T16:45:01.833Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-08-12T20:04:42.256Z\", \"assignerShortName\": \"EEF\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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