Information Exposure Affecting log4j-slf4j package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.12% (31st percentile)

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  • Snyk IDSNYK-CENTOS9-LOG4JSLF4J-16539797
  • published8 May 2026
  • disclosed27 Apr 2026

Introduced: 27 Apr 2026

NewCVE-2026-40972  (opens in a new tab)
CWE-208  (opens in a new tab)

How to fix?

There is no fixed version for Centos:9 log4j-slf4j.

NVD Description

Note: Versions mentioned in the description apply only to the upstream log4j-slf4j package and not the log4j-slf4j package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploading changed classes, thereby achieving remote code execution in the remote application.

Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); DevTools remote secret comparison. Versions that are no longer supported are also affected per vendor advisory.

CVSS Base Scores

version 3.1