{"containers":{"cna":{"affected":[{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.AshAi.ToolLoop'"],"packageName":"ash_ai","packageURL":"pkg:hex/ash_ai","product":"ash_ai","programFiles":["lib/ash_ai/tool_loop.ex"],"programRoutines":[{"name":"'Elixir.AshAi.ToolLoop':run/2"},{"name":"'Elixir.AshAi.ToolLoop':stream/2"}],"repo":"https://github.com/ash-project/ash_ai","vendor":"ash-project","versions":[{"lessThan":"1.0.0","status":"affected","version":"0.6.0","versionType":"semver"}]},{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.AshAi.ToolLoop'"],"packageName":"ash-project/ash_ai","packageURL":"pkg:github/ash-project/ash_ai","product":"ash_ai","programFiles":["lib/ash_ai/tool_loop.ex"],"programRoutines":[{"name":"'Elixir.AshAi.ToolLoop':run/2"},{"name":"'Elixir.AshAi.ToolLoop':stream/2"}],"repo":"https://github.com/ash-project/ash_ai","vendor":"ash-project","versions":[{"lessThan":"53325fdab90afab628c6a53232ef2a9001580bd9","status":"affected","version":"bc2122f78fca6c11d8ec2b9ac53148ec17476460","versionType":"git"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.0","versionStartIncluding":"0.6.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Peter Ullrich"},{"lang":"en","type":"reporter","value":"Peter Ullrich"},{"lang":"en","type":"remediation developer","value":"Zach Daniel / Ash Project"},{"lang":"en","type":"coordinator","value":"Jonatan Männchen / EEF"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Loop with Unreachable Exit Condition (Infinite Loop) vulnerability in ash-project ash_ai allows an attacker who can influence a model's output to hang the tool loop and drive unbounded, repeated model requests.</p>\n<p><code>AshAi.ToolLoop</code> classifies a model response of <code>:tool_calls</code>, then filters the calls through <code>normalize_tool_calls/2</code> and <code>unprocessed_tool_calls/2</code>. Both can empty the list: a call missing a valid name, or one reusing a <code>tool_call_id</code> that already has a result in history, is dropped. With an empty list the loop appended nothing and recursed with a byte-identical message list, so the conversation never advanced and the same request was re-sent every iteration. Under the supported <code>max_iterations: :infinity</code> this never terminated; otherwise it exhausted the full budget. Prompt-injected content can make the model re-emit a spent <code>tool_call_id</code>. The fix treats an empty post-filter list as terminal.</p>\n<p>This issue affects ash_ai: from 0.6.0 before 1.0.0.</p>"},{"base64":false,"type":"text/markdown","value":"Loop with Unreachable Exit Condition (Infinite Loop) vulnerability in ash-project ash_ai allows an attacker who can influence a model's output to hang the tool loop and drive unbounded, repeated model requests.\n\n`AshAi.ToolLoop` classifies a model response of `:tool_calls`, then filters the calls through `normalize_tool_calls/2` and `unprocessed_tool_calls/2`. Both can empty the list: a call missing a valid name, or one reusing a `tool_call_id` that already has a result in history, is dropped. With an empty list the loop appended nothing and recursed with a byte-identical message list, so the conversation never advanced and the same request was re-sent every iteration. Under the supported `max_iterations: :infinity` this never terminated; otherwise it exhausted the full budget. Prompt-injected content can make the model re-emit a spent `tool_call_id`. The fix treats an empty post-filter list as terminal.\n\nThis issue affects ash_ai: from 0.6.0 before 1.0.0."}],"value":"Loop with Unreachable Exit Condition (Infinite Loop) vulnerability in ash-project ash_ai allows an attacker who can influence a model's output to hang the tool loop and drive unbounded, repeated model requests.\n\nAshAi.ToolLoop classifies a model response of :tool_calls, then filters the calls through normalize_tool_calls/2 and unprocessed_tool_calls/2. Both can empty the list: a call missing a valid name, or one reusing a tool_call_id that already has a result in history, is dropped. With an empty list the loop appended nothing and recursed with a byte-identical message list, so the conversation never advanced and the same request was re-sent every iteration. Under the supported max_iterations: :infinity this never terminated; otherwise it exhausted the full budget. Prompt-injected content can make the model re-emit a spent tool_call_id. The fix treats an empty post-filter list as terminal.\n\nThis issue affects ash_ai: from 0.6.0 before 1.0.0."}],"impacts":[{"capecId":"CAPEC-130","descriptions":[{"lang":"en","value":"CAPEC-130 Excessive Allocation"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-835","description":"CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-31T01:07:49.185Z","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF"},"references":[{"tags":["vendor-advisory","related"],"url":"https://github.com/ash-project/ash_ai/security/advisories/GHSA-rcx7-x2w5-mmc2"},{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-82579.html"},{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-82579"},{"tags":["patch"],"url":"https://github.com/ash-project/ash_ai/commit/53325fdab90afab628c6a53232ef2a9001580bd9"}],"source":{"discovery":"EXTERNAL"},"title":"AshAi tool loop never terminates when all tool calls are filtered out, enabling denial of service"}},"cveMetadata":{"assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","assignerShortName":"EEF","cveId":"CVE-2026-82579","datePublished":"2026-08-31T01:07:49.185Z","dateReserved":"2026-08-30T20:00:01.852Z","dateUpdated":"2026-08-31T01:07:49.185Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"}