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CVE-2026-55955

Опубликовано: 29 июн. 2026
Источник: redhat
CVSS3: 4.2
EPSS Низкий

Описание

Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.

A flaw was found in Apache Tomcat. An improper authentication vulnerability in the EncryptionInterceptor component allows a remote attacker to perform a replay attack. This could lead to unauthorized access or manipulation of data within the cluster component.

Отчет

A flaw was found in Apache Tomcat's EncryptionInterceptor used for Tribes cluster communication. An improper authentication vulnerability allows a replay attack against encrypted cluster messages. Exploitation requires the EncryptionInterceptor to be configured for Tomcat clustering, which is a non-default configuration, and the attacker must have access to the cluster network to capture and replay messages. Apache rates this vulnerability as Low severity. Red Hat has corrected the impact from IMPORTANT to MODERATE — the original AI-Bot CVSS of 8.2 (AV:N/AC:L) incorrectly scored this as internet-facing with low complexity, when Tribes cluster traffic is adjacent-network (AV:A) and requires non-default clustering configuration (AC:H). The corrected vector is CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N (4.2).

Меры по смягчению последствий

This vulnerability only affects Tomcat deployments using the EncryptionInterceptor for Tribes cluster communication. Deployments that do not use Tomcat clustering or do not configure the EncryptionInterceptor are not affected. Ensure cluster communication channels are restricted to trusted, isolated networks.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10tomcatFix deferred
Red Hat Enterprise Linux 10tomcat9Fix deferred
Red Hat Enterprise Linux 6tomcat6Fix deferred
Red Hat Enterprise Linux 7tomcatFix deferred
Red Hat Enterprise Linux 8pki-deps:10.6/pki-servlet-engineFix deferred
Red Hat Enterprise Linux 8tomcatFix deferred
Red Hat Enterprise Linux 9pki-servlet-engineFix deferred
Red Hat Enterprise Linux 9tomcatFix deferred
Red Hat JBoss Web Server 5jws5-tomcatFix deferred
Red Hat JBoss Web Server 6tomcat-catalinaNot affected

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-294
https://bugzilla.redhat.com/show_bug.cgi?id=2494678tomcat: Apache Tomcat: Replay attack via improper authentication in EncryptionInterceptor

EPSS

Процентиль: 38%
0.00467
Низкий

4.2 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.5
ubuntu
около 1 месяца назад

Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.

CVSS3: 6.5
nvd
около 1 месяца назад

Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.

CVSS3: 6.5
debian
около 1 месяца назад

Improper Authentication vulnerability in Apache Tomcat allowed a repla ...

CVSS3: 6.5
github
около 1 месяца назад

Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.

suse-cvrf
17 дней назад

Security update for tomcat11

EPSS

Процентиль: 38%
0.00467
Низкий

4.2 Medium

CVSS3