CVE-2018-13257
The bb-auth-provider-cas authentication module within Blackboard Learn 2018-07-02 is susceptible to HTTP host header spoofing during Central Authentication...
- Published
- Nov 18, 2019
- Updated
- Aug 5, 2024
- Assigning CNA
- mitre
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NLow · next 30 days
- Percentile
- 66.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
The bb-auth-provider-cas authentication module within Blackboard Learn 2018-07-02 is susceptible to HTTP host header spoofing during Central Authentication Service (CAS) service ticket validation, enabling a phishing attack from the CAS server login page.
Sources
1Proof-of-concept exploit for CVE-2018-13257 demonstrating CAS host header spoofing in Blackboard Learn to hijack user sessions via a malicious intermediary website.
Responsible use
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