Session fixation in Apache Tomcat

Published: 2019-12-13 | Updated: 2020-02-06
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-17563
Exploitation vector Network
Public exploit N/A
Vulnerable software
Apache Tomcat
Server applications / Web servers

Vendor Apache Foundation

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated: 18.12.2019

Added information about patches for version 7.x.

1) Session Fixation

EUVDB-ID: #VU25002

Risk: Low


CVE-ID: CVE-2019-17563

CWE-ID: CWE-384 - Session Fixation

Exploit availability: No


The vulnerability allows a remote attacker to perform a session fixation attack.

The vulnerability exists due to a race condition when FORM authentication is used in Apache Tomcat. A remote attacker can use a narrow window to perform a session fixation attack.


Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 9.0.0 - 9.0.29, 8.5.0 - 8.5.49, 7.0.0 - 7.0.98

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?