XXE in Ellucian Webadvisor
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.
Vulnerability class: XXE (XML External Entity)
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Ellucian Webadvisor — versions 3.2
Weakness classification (CWE)
References
- www.ellucian.com/ (product)
- www.vulncheck.com/advisories/ellucian-webadvisor-unauthenticated-xxe-injection (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109430?
- CVE-2026-109430 is a high-severity vulnerability in Ellucian Webadvisor, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2026-10-15.
- How severe is CVE-2026-109430?
- High severity. CVSS v3 base score is 7.5 out of 10.