CVE-2026-10532
Deferred Deferred - Pending Action
Object Injection in Logback Core via HardenedObjectInputStream

Publication date: 2026-06-01

Last updated on: 2026-06-01

Assigner: Switzerland Government Common Vulnerability Program

Description
Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection, albeit heavily restricted. More precisely, an attacker able to influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects. Although deserialization is heavily restricted by HardenedObjectInputStream and no practical way to achieve remote code execution or significant privilege escalation has been identified, this issue constitutes a bypass of the intended security restrictions. This issue affects logback: through 1.5.33 inclusive.
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Meta Information
Published
2026-06-01
Last Modified
2026-06-01
Generated
2026-06-21
AI Q&A
2026-06-01
EPSS Evaluated
2026-06-20
NVD
CVE-2026-10532
EUVD
EUVD-2026-33632
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
qos_ch_sarl logback to 1.5.33 (inc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
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Executive Summary

This vulnerability is a deserialization of untrusted data issue in the QOS.CH Sarl logback logback-core module, specifically in the HardenedObjectInputStream component.

An attacker who can influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects.

Although the deserialization process is heavily restricted and no practical way to achieve remote code execution or significant privilege escalation has been identified, this vulnerability bypasses the intended security restrictions.

Impact Analysis

The impact of this vulnerability is limited because no practical remote code execution or significant privilege escalation has been identified.

However, it allows an attacker to bypass the intended security restrictions by instantiating Proxy objects through manipulated serialized data.

The CVSS base score is 2.9, indicating a low severity impact.

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