Quick answers
- Is CVE-2026-66092 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-66092 being exploited in the wild.
- How severe is CVE-2026-66092?
- Informational severity, published 29 October 2026.
- Which products and versions are affected?
- openEQUELLA before 2026.2.
- Is there a fix for CVE-2026-66092?
- Yes: fixed in 2026.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-66092 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-66092?
- Check whether you run openEQUELLA at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 2026.2
Technical details
The pre-login notice endpoint (PUT /api/preloginnotice) stores HTML without sanitization or encoding, and renders it unsanitized on the legacy login page, leading to stored XSS. Users with EDIT_SYSTEM_SETTINGS permission can exploit this; unauthenticated exploitation is possible if EDIT_SYSTEM_SETTINGS has been granted to guest or Everyone roles.
Affected products
- openEQUELLA openEQUELLA before 2026.2
Timeline
- 2026-10-29: disclosed