CVE-2025-11226

Conditional processing of logback.xml configuration file, in conjuction with Spring Framework and Janino

HIGH
7
CVSS Score
Published: October 1, 2025 at 07:26 AM UTC
Updated: October 9, 2026 at 09:10 AM UTC
1 product affected across 1 vendorLogback-core

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Severity
HIGH7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

ACE vulnerability in conditional configuration file processing by QOS.CH logback-core up to and including version 1.5.18 in Java applications, allows an attacker to execute arbitrary code by compromising an existing logback configuration file or by injecting an environment variable before program execution. A successful attack requires the presence of Janino library and Spring Framework to be present on the user's class path. In addition, the attacker must  have write access to a configuration file. Alternatively, the attacker could inject a malicious environment variable pointing to a malicious configuration file. In both cases, the attack requires existing privilege.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.9.20 ≤ v ≤ 1.5.180.9.20
Vendor states this is fixed in 1.3.16 (unaffected)
Vendor states this is fixed in 1.5.19 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7HIGHNCSC.ch
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-20

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