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SCA: security update for org.apache.logging.log4j:log4j-core (GHSA-3pxv-7cmr-fjr4)

medium Tenable Cloud Security Plugin ID 440322

Description

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

 - Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.html#XmlLayout , in
 versions up to and including 2.25.3, fails to sanitize characters forbidden by the XML 1.0 specification
 https://www.w3.org/TR/xml/#charsets producing invalid XML output whenever a log message or MDC value
 contains such characters. The impact depends on the StAX implementation in use: * JRE built-in StAX:
 Forbidden characters are silently written to the output, producing malformed XML. Conforming parsers must
 reject such documents with a fatal error, which may cause downstream log-processing systems to drop the
 affected records. * Alternative StAX implementations (e.g., Woodstox https://github.com/FasterXML/woodstox
 , a transitive dependency of the Jackson XML Dataformat module): An exception is thrown during the logging
 call, and the log event is never delivered to its intended appender, only to Log4j's internal status
 logger. Users are advised to upgrade to Apache Log4j Core 2.25.4, which corrects this issue by sanitizing
 forbidden characters before XML output. (CVE-2026-34480)

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-3pxv-7cmr-fjr4

Plugin Details

Severity: Medium

ID: 440322

Version: Revision 1.5

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: Medium

Score: 5

Percentile: 94.39

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-2026-34480

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-2026-34480

cwe: CWE-116