Path traversal in AshAdmin file uploads via unsanitized client filename (CVE-2026-82673) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-82673

Path traversal in AshAdmin file uploads via unsanitized client filename

Answer in brief

CVE-2026-82673 records a Unknown severity vulnerability in Path traversal in AshAdmin file uploads via unsanitized client filename. The current sources do not mark it as known exploited. The current feed maps ash-project/ash_admin (generic), ash-project/ash_admin (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_admin (generic), ash-project/ash_admin (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ash-project/ash_admingeneric	>=0.13.7 <1.3.1	1.3.1
ash-project/ash_admingeneric	>=e8f496b6a064ad67dc1cd30433e5921d2192d254 <4bb41cb697f3d9be58462d727aed75aba76efc82	4bb41cb697f3d9be58462d727aed75aba76efc82

Recommended response

Check inventory. Check lockfiles and deployed manifests for ash-project/ash_admin, ash-project/ash_admin.
Review the reported fix. Update ash-project/ash_admin to 1.3.1; ash-project/ash_admin to 4bb41cb697f3d9be58462d727aed75aba76efc82 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

Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) vulnerability in ash-project ash_admin allows writing attacker-controlled bytes to arbitrary paths on the server. AshAdmin.Components.Resource.Form.consume_file_uploads/1 builds the destination as Path.join([tmp_dir, entry.client_name]) and writes it with File.cp!/2. entry.client_name is the browser-supplied filename and is not sanitized, and Path.join/1 does not normalize ... An upload named ../../../../var/www/app/priv/static/x.png therefore escapes the random temp directory and lands anywhere the BEAM user can write, enabling arbitrary file write and potentially remote code execution by overwriting application assets, configuration, or cron/ssh files. The only guard is an extension allowlist defaulting to :any that checks only the extension. The fix strips path components with Path.basename/1 before joining. This issue affects ash_admin: from 0.13.7 before 1.3.1.

Quoted source text, attributed separately from HOL analysis.