CVE-2026-66089

XML External Entity (XXE) Vulnerability in SOAP Interface Allows External Entity Expansion

Published Oct 29, 2026 CVSS 4.0 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
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).

Remediation

Vendor Solution

Upgrade to the vendor recommended fixed versions

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Apereo Foundation
Apereo Foundation openequella
Vendors & Products Apereo Foundation
Apereo Foundation openequella
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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).
Title XML External Entity (XXE) Vulnerability in SOAP Interface Allows External Entity Expansion
Weaknesses CWE-611
References
Metrics cvssV4_0

{'score': 6.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:L/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
MON-CSIRT
Published
Updated
Oct 29, 2026, 2:02 AM
Reserved
Jul 24, 2026, 2:22 AM
Status
Deferred
Published
Oct 29, 2026, 2:16 AM
Modified
Oct 29, 2026, 3:56 PM