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TI-2026-08797 Aliases CVE-2026-10037GHSA-xg8h-3f4m-39v6

Sandbox Escape in Ubuntu OpenJDK Packages via xdg-desktop-portal

Priority LOW 39CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00176 7th percentileScored 2026-11-07
Fix Fixed Ubuntu (Canonical): 3.70+nmu1ubuntu1.22.04.1, 3.70+nmu1ubuntu1.24.04.1, 3.74ubuntu1.1 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntu——Not affectedCNA
CanonicalUbuntubefore 3.70+nmu1ubuntu1.22.04.1; before 3.70+nmu1ubuntu1.24.04.1; before 3.74ubuntu1.1; before 3.75ubuntu1.13.70+nmu1ubuntu1.22.04.1, 3.70+nmu1ubuntu1.24.04.1, 3.74ubuntu1.1, 3.75ubuntu1.1Patch availableCNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected — Fixed in — Not affected CNA
  • Ubuntu VendorCanonical Affected before 3.70+nmu1ubuntu1.22.04.1; before 3.70+nmu1ubuntu1.24.04.1; before 3.74ubuntu1.1; before 3.75ubuntu1.1 Fixed in 3.70+nmu1ubuntu1.22.04.1, 3.70+nmu1ubuntu1.24.04.1, 3.74ubuntu1.1, 3.75ubuntu1.1 Patch available CNA

Remediation

  • Fix · CNA Ubuntu (Canonical) Fixed in 3.70+nmu1ubuntu1.22.04.1, 3.70+nmu1ubuntu1.24.04.1, 3.74ubuntu1.1, 3.75ubuntu1.1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-10037
  2. 2026-10-03 Alias added: GHSA-xg8h-3f4m-39v6

References

Other 1

  • TI-2020-09349 An issue was discovered in SaltStack Salt before 2019.2.4 and 3000 before 3000.2. KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-05854 smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01431 Netlogon Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-12627 Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than… KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-07471 OS command injection in exim KEVCVSS 3.1CRITICAL 9.8
See all 4301 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences