CVE WatchOct 8, 2026

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

CVSS

7.5

High

EPSS

10.7%

p96

KEV

—

Exploit Today

0-100

Published: Dec 23, 2019 · Last modified: Oct 8, 2026 · CWE-384

EPSS · 30d

10.7%EPSS · 30 days10.7%

2026-09-282026-10-26

Technical description

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 exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability.

Official references

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