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CVE-2026-66089

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

CVSS score

6.1

EPSS probability

—

Risk score

0.6

Published

1 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-66089: XML External Entity (XXE) Vulnerability in openEQUELLA SOAP Interface

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

In openEQUELLA before 2026.1, the SOAP API parses XML supplied in the stopEdit operation using a parser that resolves external entities [S0, S1]. This allows an attacker to read arbitrary files accessible to the service or cause the server to issue requests to attacker-specified locations [S0, S1].

Why does it matter?

This security flaw allows an authenticated attacker to access sensitive files or perform server-side request forgery (SSRF), posing significant confidentiality and integrity risks [S0, S1].

What should be done?

  • Follow vendor advisories to review updates [S0]
  • Keep openEQUELLA deployments up to date [S0, S1]
Chain of evidence and sources2 verified claims

openEQUELLA 2026.1 öncesi sürümlerdeki stopEdit SOAP operasyonu XML harici varlık çözünürlüğüne izin verir.

S0 · daybreach-canonicalS1 · cvelist

Bu zafiyet hassas dosyaların okunmasına ve sunucu tabanlı istek sahteciliğine (SSRF) yol açabilir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

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 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

CWE: CWE-611

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-66089 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Apereo FoundationopenEQUELLA View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.1CVSS V4_0MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:L/SI:N/SA:NCVE CNA
6.1CVSS V40MEDIUMCVSS: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:XNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-66089 is associated with the following CWEs:

CWE-611: Common Weakness Enumeration Entry CWE-611

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-66089 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

https://github.com/openequella/openEQUELLA/security/advisories/GHSA-f9wv-5rpf-rq45vendor-advisoryhttps://openequella.github.io/guides/vendor-advisory

CVSS Vector Radar Chart

6.1 / 10
Attack VectorNetworkComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityLow

Vulnerability Scoring Details

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
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

AF
Apereo Foundation logo
Apereo Foundation

Weakness Type (CWE & CAPEC)

CWE-611

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CVE-2026-66089 · XML External Entity (XXE) Vulnerability in…