Ellucian WebAdvisor 3.2 Unauthenticated XXE Injection
CVE-2026-109430

8.7HIGH

Key Information:

Vendor

Ellucian

Status
Webadvisor
Vendor
CVE Published:
15 October 2026

What is CVE-2026-109430?

Ellucian WebAdvisor 3.2 contains an unauthenticated XML External Entity (XXE) injection vulnerability that allows remote attackers to submit crafted XML POST requests to the /WebAdvisor/WebAdvisor endpoint without disabling external entity and DTD resolution. Attackers can exploit this flaw to force the server into SSRF requests, coerce NTLMv2 hash disclosure via attacker-controlled SMB shares, and read arbitrary files from the underlying Windows host through an out-of-band error-based channel. WebAdvisor entered end-of-support status in June 2022 and users are encouraged to migrate to Colleague Self-Service.

Affected Version(s)

WebAdvisor 3.2

References

https://www.ellucian.com/
product
https://www.vulncheck.com/advisories/ellucian-webadvisor-...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp.
Marisabel Bachour, Pentester, GM Sectec, Corp.
.