8.8

CVE-2026-10037: canonical ubuntu Improper Input Validation

CVSS: 8.8v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-10037
Published 08-07-2026Last modified 14-07-2026
Open JSON

Vulnerability summary

CVE-2026-10037 is a high (CVSS 8.8) Improper Input Validation vulnerability in canonical ubuntu. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.6% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
USN-8518-1

Timeline

  1. 08-07-2026
    PublishedVulnerability first disclosed.
  2. 14-07-2026
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.18%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu11 products
  • mailcap< 3.70+nmu1ubuntu1.22.04.1 | < 3.70+nmu1ubuntu1.24.04.1 | < 3.74ubuntu1.1 | All versions (No fix recorded) | < 3.75ubuntu1.1
  • openjdk-13All versions (No fix recorded)
  • openjdk-16All versions (No fix recorded)
  • openjdk-17All versions (No fix recorded)
  • openjdk-17-cracAll versions (No fix recorded)
Canonical1 product
  • ubuntu< 3.70+nmu1ubuntu1.22.04.1 | < 3.70+nmu1ubuntu1.24.04.1 | < 3.74ubuntu1.1 | < 3.75ubuntu1.1

2 vendors · 12 products

References

4 links