CVE-2026-34477

medium Red Hat
CVSS v3 Base Score
6.8
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS Score
0.0%
Exploitation probability in 30 days
Top 88% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Published: April 10, 2026 (91 days ago)
Last Modified: April 10, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in Apache Log4j Core. A network-based attacker can perform a man-in-the-middle (MITM) attack, allowing them to intercept encrypted communications. This occurs when an SMTP, Socket, or Syslog appender uses Transport Layer Security (TLS) with a nested <Ssl> element, and the attacker has a certificate from a trusted Certificate Authority (CA). The vulnerability stems from an incomplete hostname verification fix, making TLS connections susceptible to interception.

CWE

CWE-295

Affected Products

Red Hat AI Inference ServerRed Hat AMQ Broker 7Red Hat build of Apache Camel for Spring Boot 4Red Hat build of Apache Camel - HawtIO 4Red Hat build of Apicurio Registry 2Red Hat build of Apicurio Registry 3Red Hat build of OptaPlanner 8Red Hat Data Grid 8Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com 🔗 lists.apache.org