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CVE-2026-82673— Path traversal in AshAdmin file uploads via unsanitized client filename

Quick assessment

Affected
ash-project ash_admin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ash Framework AshAdmin是Ash Framework组织的一款管理后台界面工具。 Ash Framework AshAdmin 0.13.7版本至1.3.1之前版本存在路径遍历漏洞，该漏洞源于对文件路径的限制不当，Path.join函数未规范化浏览器提供的文件名，攻击者可通过上传特制文件名将文件写入服务器任意路径，可能导致任意文件写入和远程代码执行。

CVSS 8.3 · High EPSS 0.79% · P55

Affected Version Matrix 2

VendorProduct Version RangeStatus
ash-project ash_admin 0.13.7< 1.3.1 affected
e8f496b6a064ad67dc1cd30433e5921d2192d254< 4bb41cb697f3d9be58462d727aed75aba76efc82 affected
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I. Basic Information for CVE-2026-82673

Vulnerability Information
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Vulnerability Title
Path traversal in AshAdmin file uploads via unsanitized client filename
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Ash Framework AshAdmin 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ash Framework AshAdmin是Ash Framework组织的一款管理后台界面工具。 Ash Framework AshAdmin 0.13.7版本至1.3.1之前版本存在路径遍历漏洞，该漏洞源于对文件路径的限制不当，Path.join函数未规范化浏览器提供的文件名，攻击者可通过上传特制文件名将文件写入服务器任意路径，可能导致任意文件写入和远程代码执行。
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_admin 0.13.7 ~ 1.3.1 cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*
ash-project ash_admin e8f496b6a064ad67dc1cd30433e5921d2192d254 ~ 4bb41cb697f3d9be58462d727aed75aba76efc82 cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82673

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III. Intelligence Information for CVE-2026-82673

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Patches & Fixes for CVE-2026-82673 (1)

Vendor Advisories for CVE-2026-82673 (3)

Same Patch Batch · ash-project · 2026-08-31 · 17 CVEs total

CVE-2026-77956 8.9 HIGH EEx template evaluation of prompt content in AshAi enables remote code execution
CVE-2026-77850 8.4 HIGH Stored XSS in AshAdmin relationship typeahead via unescaped label_field content
CVE-2026-75757 8.3 HIGH AshAdmin cookie reader matches names by substring, enabling actor/session shadowing from a
CVE-2026-82722 8.3 HIGH AshAdmin LiveView events intern atoms from client input, exhausting the atom table (node D
CVE-2026-82724 7.6 HIGH Broken access control in AshPhoenix SubdomainHook via a nil tenant in handle_subdomain
CVE-2026-81315 7.4 HIGH MCP DNS-rebinding origin check in AshAi is bypassed by a spoofed X-Forwarded-Proto header
CVE-2026-75760 7.1 HIGH AshAi vectorize change leaks raw embedding-provider errors, including credentials, in a us
CVE-2026-82564 7.1 HIGH Identity tool filter in AshAi accepts operator maps, allowing update or destroy of unident
CVE-2026-82726 6.3 MEDIUM AshPhoenix get_subdomain maps a crafted or differently-cased Host header to an arbitrary t
CVE-2026-82579 6.0 MEDIUM AshAi tool loop never terminates when all tool calls are filtered out, enabling denial of
CVE-2026-82580 5.3 MEDIUM AshAi echoes raw tool exception messages into the conversation, disclosing internal detail
CVE-2026-81853 2.3 LOW AshAdmin composite primary key decoding accepts arbitrary fields, enabling a secret-attrib
CVE-2026-82725 2.3 LOW AshPhoenix FilterForm allows filtering across non-public relationships, disclosing private
CVE-2026-82727 2.3 LOW AshPhoenix Form.Auto leaks submitted params in an unknown _union_type error message
CVE-2026-81852 2.1 LOW AshAdmin ships a hardcoded CSP nonce, allowing nonce-based CSP bypass
CVE-2026-82681 2.0 LOW Query-parameter injection in AshAdmin row-action links via unencoded string primary keys

IV. Related Vulnerabilities

Same product: ash_admin
Same vendor: ash-project
Same weakness: CWE-22

V. Comments for CVE-2026-82673

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