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Vulnerability record · CVE-2026-10037 · published 8 July 2026

CVE-2026-10037: Improper input validation vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.18% · top 93.6% CWE-20 · Improper input validation Awaiting Analysis
8.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
14 Jul 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

LinkTags
https://bugs.launchpad.net/ubuntu/+source/openjdk-25/+bug/2153100

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Source: NIST National Vulnerability Database (record CVE-2026-10037), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.