{"id":"CVE-2018-13257","aliases":["EUVD-2018-5206","GHSA-mjpp-cj33-843w"],"status":"published","title":"The bb-auth-provider-cas authentication module within Blackboard Learn 2018-07-02 is susceptible...","description":"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.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0121,"percentile":0.68645,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-601"],"published":"2019-11-18T15:32:42Z","modified":"2026-06-17T01:39:06Z","exploits":[{"source":"pocgithub","id":"gluxon/CVE-2018-13257","title":"gluxon/CVE-2018-13257","date":"2019-03-16","url":"https://github.com/gluxon/CVE-2018-13257"}],"products":[{"vendor":"blackboard","product":"blackboard_learn"}],"references":[{"url":"https://github.com/gluxon/CVE-2018-13257","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-13257"},{"url":"https://github.com/advisories/GHSA-mjpp-cj33-843w"}],"sources":{"cve":[{"id":"CVE-2018-13257","description":"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.","status":"published","published":"2019-11-18T15:32:42Z","modified":"2024-08-05T09:00:34.044Z","updated_at":"2026-11-02T14:35:07.01498Z"}],"euvd":[{"id":"EUVD-2018-5206","description":"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.","status":"published","published":"2019-11-18T15:32:42Z","modified":"2024-08-05T09:00:34Z","updated_at":"2026-11-03T02:39:50.070155Z"}],"ghsa":[{"id":"GHSA-mjpp-cj33-843w","title":"The bb-auth-provider-cas authentication module within Blackboard Learn 2018-07-02 is susceptible...","description":"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.","status":"published","published":"2022-05-24T17:01:25Z","modified":"2024-04-04T02:39:56Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:56:10.534826Z"}],"nvd":[{"id":"CVE-2018-13257","description":"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.","status":"published","published":"2019-11-18T16:15:11.447Z","modified":"2026-06-17T01:39:06.19Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:04:59.278647Z"}]}}