Vulnerability 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 objects from classes in the java.lang and java.util packages that are not explicitly blocked. 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 1.5.32 inclusive.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-9828?
CVE-2026-9828 is a documented vulnerability. Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection albeit heavily restricted. More precisel...
How severe is CVE-2026-9828?
CVSS scoring is not yet available for CVE-2026-9828. Check NVD for updates.
Is there a patch for CVE-2026-9828?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.