Is CVE-2018-13257 actively exploited?

No active exploitation of CVE-2018-13257 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-13257 be exploited remotely?

Yes. CVE-2018-13257 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-13257?

CVE-2018-13257 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2018-13257

MEDIUM

CVE-2018-13257

CWE-601Published: November 18, 2019· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2018-13257 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.