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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-66089
StatePUBLISHED
AssignerMON-CSIRT
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-29 02:16:52 UTC
Updated2026-10-29 02:16:52 UTC
DescriptionIn 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).

Risk And Classification

Primary CVSS: v4.0 6.1 MEDIUM from 9c1820ae-fb77-4810-a8aa-ca46e7474d2f

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-611 | CWE-611 CWE-611 Improper restriction of XML external entity reference

VersionSourceTypeScoreSeverityVector
4.09c1820ae-fb77-4810-a8aa-ca46e7474d2fSecondary6.1MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:L/SI:N/SA:N/E:X/C...
4.0CNACVSS6.1MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:L/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
Low
Availability
Low
Sub Conf.
Low
Sub Integrity
None
Sub Availability
None

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apereo Foundation OpenEQUELLA affected 2026.1 custom Not specified
CNA Apereo Foundation OpenEQUELLA unaffected 2026.1 2026.2 custom Not specified

References

ReferenceSourceLinkTags
openequella.github.io/guides 9c1820ae-fb77-4810-a8aa-ca46e7474d2f openequella.github.io
github.com/openequella/openEQUELLA/security/advisories/GHSA-f9wv-5rpf-rq45 9c1820ae-fb77-4810-a8aa-ca46e7474d2f github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: dr0v3r (en)

Additional Advisory Data

Solutions

CNA: Upgrade to the vendor recommended fixed versions

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