Medium 6.1Published Oct 28, 2026

CVE-2026-66089XML External Entity (XXE) Vulnerability in SOAP Interface Allows External Entity Expansion

Updated under an hour ago (Oct 29, 2026, 11:10 AM ET)

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It affects Apereo Foundation openEQUELLA. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Apereo Foundation openEQUELLA

Exploited in the last 30 days

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).

CVSS: 6.1 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-611
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: MON-CSIRT
NVD analysis: Received
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 28, 2026

Affected products

Affected products

Apereo Foundation openEQUELLA apereo_foundation:openequella (from the name)	before 2026.1; from 2026.1 through 2026.2 not affected	CNA record

References

References

https://github.com/openequella/openEQUELLA/security/advisories/GHSA-f9wv-5rpf-rq45	vendor-advisory
https://openequella.github.io/guides/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.