CVE-2026-77850

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.

CVSS

No CVSS.

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-31 03:16

Updated : 2026-09-01 21:15

NVD link : CVE-2026-77850

Mitre link : CVE-2026-77850

CVE.ORG link : CVE-2026-77850

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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.\n\nThis issue affects ash_admin: from 0.13.0 before 1.3.1."}], "lastModified": "2026-09-01T21:15:00.147", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}