PT-2026-40072 · Apache · Apache Tomcat

Published 2026-05-12 · Updated 2026-06-01 · CVE-2026-43513

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.21 Apache Tomcat versions 10.1.0-M1 through 10.1.54 Apache Tomcat versions 9.0.0.M1 through 9.0.117 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions 7.0.0 through 7.0.109

Description Improper handling of case sensitivity in the LockOutRealm component.

Recommendations Upgrade versions 11.0.0-M1 through 11.0.21 to 11.0.22. Upgrade versions 10.1.0-M1 through 10.1.54 to 10.1.55. Upgrade versions 9.0.0.M1 through 9.0.117 to 9.0.118.

Fix

Weakness Enumeration

CWE-178

Related Identifiers

BIT-TOMCAT-2026-43513

CVE-2026-43513

GHSA-5MP6-JRQ3-R938

OESA-2026-2296

OPENSUSE-SU-2026:10925-1

OPENSUSE-SU-2026:10926-1

OPENSUSE-SU-2026:10927-1

Affected Products

Apache Tomcat

References · 32

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43513 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10927-1 · Vendor Advisory
• https://lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43512 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10925-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10926-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41293 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43514 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-41284 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43513 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43515 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-42498 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43513 · Security Note
• https://osv.dev/vulnerability/BIT-tomcat-2026-43513 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2296 · Vendor Advisory