CVE-2026-66092

Medium

Description

In openEQUELLA before 2026.2, the pre-login notice is stored as HTML and rendered on the legacy logon page without encoding or sanitisation. A user holding the EDIT_SYSTEM_SETTINGS permission can set a notice containing an arbitrary script (PUT /api/preloginnotice), resulting in stored cross-site scripting on the login page. Unauthenticated exploitation is possible where EDIT_SYSTEM_SETTINGS has been granted to the guest user or Everyone

SeverityMedium

CVSS4.8

Exploit probability26. percentile0.3%

ProductopenEQUELLA

PublishedOct 29, 2026

First seenNov 4, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

Apereo Foundation openEQUELLA2026.2 or later

Vendor advisories

github.com/openequella/openEQUELLA/security/advisories/GHSA-9jhj-7h37-3j2c

Affected products

Product	Affected versions	Fixed in
Apereo Foundation openEQUELLA	2019.1 ≤ v < 2026.2	2026.2

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