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CVE-2026-66089

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

MEDIUM
6.1
CVSS Score
Published: October 29, 2026 at 01:36 AM UTC
Updated: October 29, 2026 at 03:56 PM UTC
1 product affected across 1 vendoropenEQUELLA

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

openEQUELLA· Apereo
90%
All versions
Vendor states this is fixed in 2026.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: cverecord
https://github.com/openequella/openEQUELLA/security/advisories/GHSA-f9wv-5rpf-rq45
Product
Source: cverecord
https://openequella.github.io/guides/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMMON-CSIRT
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-611

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