Is CVE-2019-3787 actively exploited?

No active exploitation of CVE-2019-3787 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-3787 be exploited remotely?

Yes. CVE-2019-3787 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-3787?

CVE-2019-3787 has a CVSS score of 8.3 (HIGH).

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HIGH

CVE-2019-3787

CWE-840Published: June 19, 2019· Updated: Jun 17, 2026

8.3

CVSS v3.1

Official Description

Cloud Foundry UAA, versions prior to 73.0.0, falls back to appending “unknown.org” to a user's email address when one is not provided and the user name does not contain an @ character. This domain is held by a private company, which leads to attack vectors including password recovery emails sent to a potentially fraudulent address. This would allow the attacker to gain complete control of the user's account.

NVD Source

Technical Analysis

CVE-2019-3787 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.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.3.

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.