TI-2026-82262 Aliases CVE-2026-66089 GHSA-93f7-2j6h-9wwg

XML external entity injection in openEQUELLA SOAP API lets attackers read files

LOW 27CWE-611Published 2026-10-29 · Updated 2026-10-29

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: —
Confidentiality · integrity · availability: High · Low · Low
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

In openEQUELLA before 2026.1, the SOAP API parses XML supplied in the stopEdit operation with a parser that resolves external entities. A remote attacker with low privileges can abuse this XML External Entity flaw (CWE-611) to read files accessible to the openEQUELLA service or make the server send requests to attacker-specified locations (SSRF).

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00269 19th percentileScored 2026-11-07

Fix Fixed openEQUELLA (Apereo Foundation): 2026.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apereo Foundation	openEQUELLA	before 2026.1	2026.1	Patch available	CNA

openEQUELLA VendorApereo Foundation Affected before 2026.1 Fixed in 2026.1 Patch available CNA

Remediation

Upgrade openEQUELLA to version 2026.1 or later, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fix · CNA openEQUELLA (Apereo Foundation) Fixed in 2026.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-29
Apereo Foundation openEQUELLA 2026.1
5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2026-82261 OS command injection in openEQUELLA via system.executePriority MEDIUM 44
- TI-2026-82264 Unauthenticated access to user details in openEQUELLAPriority LOW 37
- TI-2026-82263 XML external entity injection in openEQUELLA allows file readsPriority LOW 31
Show all 5 records →

Timeline

2026-10-29 Threatist record created from CVE-2026-66089
2026-10-29 CISA SSVC decision points changed
2026-10-29 Priority changed: MEDIUM → LOW
2026-10-29 Alias added: GHSA-93f7-2j6h-9wwg

References

Advisory 1

https://github.com/openequella/openEQUELLA/security/advisories/GHSA-f9wv-5rpf-rq45

Other 1

https://openequella.github.io/guides/

TI-2026-47769 openEQUELLA < 2026.1.0 Authenticated RCE via Java Deserialization in HTTP Invoker CVSS 4.0HIGH 8.7
TI-2026-82261 OS command injection in openEQUELLA via system.execute CVSS 4.0CRITICAL 9.4
TI-2026-82264 Unauthenticated access to user details in openEQUELLA CVSS 4.0MEDIUM 6.9
TI-2026-82263 XML external entity injection in openEQUELLA allows file reads CVSS 4.0HIGH 7.1
TI-2026-82265 Stored XSS in openEQUELLA pre-login notice via legacy logon page CVSS 4.0MEDIUM 4.8
TI-2026-82260 Stored XSS via pre-login notice image upload in openEQUELLA CVSS 4.0MEDIUM 4.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences