Vulnerability in Apache Tomcat

CVE-2019-17563

When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack. The window was considered too narrow for an expl…

EPSS: 0.107 (95.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-17563?
CVE-2019-17563 is a high-severity vulnerability in Apache Tomcat, classified under Session Fixation. CVSS score: 7.5/10. Published 2019-12-23.
How severe is CVE-2019-17563?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2019-17563 known to be exploited?
8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.