CVE-2026-77850

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.

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Produits concernés

• ash-project ash_admin

Scores CVSS

Faiblesses (CWE)

• CWE-79

Références

• https://cna.erlef.org/cves/CVE-2026-77850.html
• https://github.com/ash-project/ash_admin/commit/07289191ccdac27dd70ab7c6413ed057bc7fdade
• https://github.com/ash-project/ash_admin/security/advisories/GHSA-m23x-576h-73w8
• https://osv.dev/vulnerability/EEF-CVE-2026-77850
• https://github.com/ash-project/ash_admin/security/advisories/GHSA-m23x-576h-73w8

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories