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Vulnerability record · CVE-2019-8978 · published 14 May 2019

CVE-2019-8978: Ellucian banner enterprise identity services improper authentication vulnerability

Ellucian · Banner Enterprise Identity Services

An improper authentication vulnerability can be exploited through a race condition that occurs in Ellucian Banner Web Tailor 8.8.3, 8.8.4, and 8.9 and Banner Enterprise Identity Services 8.3, 8.3.1, 8.3.2, and 8.4, in conjunction with SSO Manager. This vulnerability allows remote attackers to steal a victim's session (and cause a denial of service) by repeatedly requesting the initial Banner Web Tailor main page with the IDMSESSID cookie set to the victim's UDCID, which in the case tested is the institutional ID. During a login attempt by a victim, the attacker can leverage the race condition and will be issued the SESSID that was meant for this victim.

8.1 CVSS 3.0 High EPSS 5.9% · top 7.1% CWE-287 · Improper authenticationCWE-362 · Race condition
8.1CVSS 3.0 base score, v2 6.8
5.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

An improper authentication vulnerability can be exploited through a race condition that occurs in Ellucian Banner Web Tailor 8.8.3, 8.8.4, and 8.9 and Banner Enterprise Identity Services 8.3, 8.3.1, 8.3.2, and 8.4, in conjunction with SSO Manager. This vulnerability allows remote attackers to steal a victim's session (and cause a denial of service) by repeatedly requesting the initial Banner Web Tailor main page with the IDMSESSID cookie set to the victim's UDCID, which in the case tested is the institutional ID. During a login attempt by a victim, the attacker can leverage the race condition and will be issued the SESSID that was meant for this victim.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/152856/Ellucian-Banner-Web-Tailor-Banner-Enterprise-Identity-Services-Improper-Auth Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2019/May/18 Mailing ListThird Party Advisory
https://ecommunities.ellucian.com/message/252749#252749 Permissions Required
https://ecommunities.ellucian.com/message/252810#252810 Permissions Required
https://raw.githubusercontent.com/JoshuaMulliken/CVE-2019-8978/master/README.txt Third Party Advisory
https://seclists.org/bugtraq/2019/May/31 Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/152856/Ellucian-Banner-Web-Tailor-Banner-Enterprise-Identity-Services-Improper-Auth Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2019/May/18 Mailing ListThird Party Advisory
https://ecommunities.ellucian.com/message/252749#252749 Permissions Required
https://ecommunities.ellucian.com/message/252810#252810 Permissions Required
https://raw.githubusercontent.com/JoshuaMulliken/CVE-2019-8978/master/README.txt Third Party Advisory
https://seclists.org/bugtraq/2019/May/31 Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-8978), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.