Stored XSS in AshAdmin relationship typeahead via unescaped label_field content (CVE-2026-77850) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-77850

Stored XSS in AshAdmin relationship typeahead via unescaped label_field content

Answer in brief

CVE-2026-77850 records a Unknown severity vulnerability in Stored XSS in AshAdmin relationship typeahead via unescaped label_field content. 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	>=0.13.0 <1.3.1	1.3.1
ash-project/ash_admingeneric	>=eb940f4d7d857ca49368ae847f586d01c6f5ad35 <07289191ccdac27dd70ab7c6413ed057bc7fdade	07289191ccdac27dd70ab7c6413ed057bc7fdade

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 07289191ccdac27dd70ab7c6413ed057bc7fdade 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

Stored Cross-site Scripting vulnerability in ash-project ash_admin executes attacker-supplied record content as script in an administrator's browser. The relationship typeahead components AshAdmin.Components.Resource.RelationshipField and AshAdmin.Components.Resource.ManagedRelationshipSelectField highlight the matched search term by wrapping it in <b> tags and rendering the whole string with Phoenix.HTML.raw/1. The highlighted value is the destination record's label_field, ordinary database content that is often written by lower-privileged users. Because raw/1 disables output escaping for the entire string, a stored label such as <img src=x onerror=...> runs as JavaScript in the admin's session as soon as a matching record appears in the dropdown, giving the attacker the admin's privileges over everything AshAdmin exposes. The fix HTML-escapes the label before inserting the highlight markup. This issue affects ash_admin: from 0.13.0 before 1.3.1.

Quoted source text, attributed separately from HOL analysis.