CVE-2026-66089: XML External Entity (XXE) Vulnerability in SOAP Interface Allows External Entity Expansion
Apereo Foundation · openEQUELLA
Fixed in 2026.1 · Affected: Apereo Foundation openEQUELLA before 2026.1 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 19% of scored CVEs
DescriptionCVE.org
In openEQUELLA before 2026.1, the SOAP API parses XML supplied in the stopEdit operation with a parser that resolves external entities. This allows an attacker to read arbitrary files accessible to the openEQUELLA service or cause the server to issue requests to attacker-specified locations (SSRF).
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Apereo Foundation · openEQUELLAbefore 2026.1
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Apereo Foundation
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-66089 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.