# CVE-2026-81852

## Summary

- **CVE ID:** CVE-2026-81852
- **Severity:** LOW
- **CVSS Score:** 2.1 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-330
- **Published:** Aug 31, 2026
- **Last Modified:** Aug 31, 2026

## Description

Use of Insufficiently Random Values vulnerability in ash-project ash_admin ships a hardcoded, publicly known CSP nonce, defeating nonce-based Content-Security-Policy protection.

When mounted without :csp_nonce_assign_key, AshAdmin.Router.ash_admin/2 defaulted the img, style, and script nonces to the literal constant ash_admin-Ed55GFnX, which AshAdmin.Layouts wrote verbatim into the nonce attribute of its inline <style> and <script> tags on every response. The value is a compile-time constant published in the repository and is never rotated per request. If an application's CSP script-src allow-lists that documented default, any HTML-injection sink on an admin page can reuse the known nonce to run inline scripts the policy was meant to block. The fix generates a fresh random nonce per request.

This issue affects ash_admin: from 0.10.8 before 1.3.1.

## Affected Products

- ash-project — ash_admin (0.10.8)
- ash-project — ash_admin (99b8daed7b2f79d82fcd9e89338d41b0e1564aa7)

## References

- [CNA](https://github.com/ash-project/ash_admin/security/advisories/GHSA-whfj-rrrp-j597)
- [CNA](https://cna.erlef.org/cves/CVE-2026-81852.html)
- [CNA](https://osv.dev/vulnerability/EEF-CVE-2026-81852)
- [CNA](https://github.com/ash-project/ash_admin/commit/bc7a1cdf873b16971a8efec35d085f8bb706314f)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.30%
- **EPSS Percentile:** 22.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-12._