CVE-2026-10532
LowCVSS 2.9Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
A deserialization of untrusted data vulnerability in logback-core's HardenedObjectInputStream module allows an attacker who can influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer to instantiate Proxy objects. Although deserialization is heavily restricted, this constitutes a bypass of intended security restrictions.
Risk Assessment
The risk involves bypassing deserialization security restrictions, which could lead to unauthorized actions, though practical remote code execution is unlikely.
Recommendation
Update logback to version above 1.5.33 or apply additional security measures such as restricting access to SimpleSocketServer and SimpleSSLSocketServer.
Original NVD description (English source)
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.