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CVE-2026-82673 ash-project CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-31T03:16:43.473Z and has not been modified since then. The vulnerability exists in ash_admin, affecting versions from 0.13.7 before 1.3.1. The issue arises from improper limitation of a pathname to a restricted directory, allowing path traversal attacks. This could allow attackers to write arbitrary files on the server, potentially leading to remote code execution. Users of ash_admin should review system configurations, monitor for suspicious activity, and apply the patch or update to a secure version. The fix involves stripping path components using Path.basename/1 before joining. The CVE is rated HIGH with a CVSS score of 8.3, indicating a serious vulnerability.

Vendor
ash-project
Product
ash_admin
CVSS
HIGH 8.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-31
Original CVE updated
2026-08-31
Advisory published
2026-08-31
Advisory updated
2026-08-31

Who should care

Users of ash_admin versions from 0.13.7 before 1.3.1 should be aware of this vulnerability and take immediate action to mitigate the risk. This includes reviewing system configurations, monitoring for suspicious activity, and applying the patch or updating to a secure version.

Technical summary

The vulnerability exists in the ash_admin component, specifically in the AshAdmin.Components.Resource.Form.consume_file_uploads/1 function. This function builds the destination path by joining the temporary directory with the browser-supplied filename, which is not sanitized. This allows attackers to perform path traversal attacks, potentially leading to arbitrary file writes and remote code execution.

Defensive priority

CVE-2026-82673 is rated HIGH with a CVSS score of 8.3, indicating a serious vulnerability that could allow attackers to write arbitrary files on the server, potentially leading to remote code execution.

Recommended defensive actions

  • Review and apply the patch from https://github.com/ash-project/ash_admin/commit/4bb41cb697f3d9be58462d727aed75aba76efc82
  • Update ash_admin to version 1.3.1 or later
  • Implement additional monitoring for suspicious file uploads and system changes
  • Review system configurations and assets for potential unauthorized modifications
  • Consider compensating controls such as Web Application Firewalls

Evidence notes

The vulnerability exists in ash_admin, affecting versions from 0.13.7 before 1.3.1. The issue arises from improper limitation of a pathname to a restricted directory, allowing path traversal attacks. The fix involves stripping path components using Path.basename/1 before joining.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-82673 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-82673

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-82673 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-82673

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://cna.erlef.org/cves/CVE-2026-82673.html

    6b3ad84c-e1a6-4bf7-a703-f496b71e49db

  • Source reference

    Unverified legacy reference

    URL: https://github.com/ash-project/ash_admin/commit/4bb41cb697f3d9be58462d727aed75aba76efc82

    6b3ad84c-e1a6-4bf7-a703-f496b71e49db

  • Source reference

    Unverified legacy reference

    URL: https://github.com/ash-project/ash_admin/security/advisories/GHSA-483p-rgcq-p5j9

    6b3ad84c-e1a6-4bf7-a703-f496b71e49db

  • Source reference

    Unverified legacy reference

    URL: https://osv.dev/vulnerability/EEF-CVE-2026-82673

    6b3ad84c-e1a6-4bf7-a703-f496b71e49db

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.