AshAi tool loop never terminates when all tool calls are filtered out, enabling denial of service (CVE-2026-82579) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-82579

AshAi tool loop never terminates when all tool calls are filtered out, enabling denial of service

Answer in brief

CVE-2026-82579 records a Unknown severity vulnerability in AshAi tool loop never terminates when all tool calls are filtered out, enabling denial of service. The current sources do not mark it as known exploited. The current feed maps ash-project/ash_ai (generic), ash-project/ash_ai (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 31, 2026Updated Aug 31, 2026Source checked Aug 31, 2026First seen by HOL Aug 31, 2026Material review Aug 31, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ash-project/ash_ai (generic), ash-project/ash_ai (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ash-project/ash_aigeneric	>=0.6.0 <1.0.0	1.0.0
ash-project/ash_aigeneric	>=bc2122f78fca6c11d8ec2b9ac53148ec17476460 <53325fdab90afab628c6a53232ef2a9001580bd9	53325fdab90afab628c6a53232ef2a9001580bd9

Recommended response

Check inventory. Check lockfiles and deployed manifests for ash-project/ash_ai, ash-project/ash_ai.
Review the reported fix. Update ash-project/ash_ai to 1.0.0; ash-project/ash_ai to 53325fdab90afab628c6a53232ef2a9001580bd9 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 31, 2026

Sources and claim methodology

Upstream source description

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. 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. This issue affects ash_ai: from 0.6.0 before 1.0.0.

Quoted source text, attributed separately from HOL analysis.