Bug 2498293 (CVE-2026-10037)

Summary: CVE-2026-10037 openjdk: OpenJDK: Sandbox escape allows arbitrary code execution
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in OpenJDK. A local attacker with low privileges can exploit a sandbox escape vulnerability in the OpenJDK packages. This occurs because the .jar MIME handlers, when the mailcap package is installed, execute files marked as executable. A malicious sandboxed application can write an executable .jar file to the host file system and trigger its execution, leading to arbitrary code execution outside of the sandbox environment.
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Description OSIDB Bzimport 2026-07-08 22:02:19 UTC 
A sandbox escape vulnerability exists in the OpenJDK packages provided in Ubuntu. The .jar MIME handlers installed by these packages execute files marked as executable when the mailcap package is installed. A compromised or malicious sandboxed application with access to the OpenURI portal via xdg-desktop-portal-gtk can write a malicious .jar file to the host file system, set its executable bit, and trigger the handler to execute arbitrary code outside of the sandbox environment.