GitHub Advisoryadvisory · Maven

GHSA-p47f-322f-whfh QOS.CH Sarl logback logback-core has a deserialization of untrusted data vulnerability

LOW Published 2026-05-28 Modified 2026-07-02 Official page ↗
Aliases
CVE-2026-9828
Ecosystem
Maven
Packages
ch.qos.logback:logback-core
Severity
Low
CVSS vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/RE:L/U:Green
Weaknesses
CWE-502
Reviewed
2026-07-02

Affected packages

• Maven ch.qos.logback:logback-core: < 1.5.33 → fixed in 1.5.33

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

Alias · CVE (1)

  • CVE-2026-9828 Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules)… vulnerability

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References