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SCA: security update for org.apache.logging.log4j:log4j-core (GHSA-445c-vh5m-36rj)

medium Tenable Cloud Security Plugin ID 440320

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.html#RFC5424Layout ,
 in versions 2.21.0 through 2.25.3, is vulnerable to log injection via CRLF sequences due to undocumented
 renames of security-relevant configuration attributes. Two distinct issues affect users of stream-based
 syslog services who configure Rfc5424Layout directly: * The newLineEscape attribute was silently renamed,
 causing newline escaping to stop working for users of TCP framing (RFC 6587), exposing them to CRLF
 injection in log output. * The useTlsMessageFormat attribute was silently renamed, causing users of TLS
 framing (RFC 5425) to be silently downgraded to unframed TCP (RFC 6587), without newline escaping. Users
 of the SyslogAppender are not affected, as its configuration attributes were not modified. Users are
 advised to upgrade to Apache Log4j Core 2.25.4, which corrects this issue. (CVE-2026-34478)

Solution

Update the org.apache.logging.log4j:log4j-core library and its related packages to version 2.25.4 or later.

See Also

https://github.com/advisories/GHSA-445c-vh5m-36rj

Plugin Details

Severity: Medium

ID: 440320

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 4/14/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2026-34478

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/10/2026

Vulnerability Publication Date: 4/10/2026

Reference Information

CVE: CVE-2026-34478