CVE-2026-10037
Aaron Rainbolt discovered that the cautious-launcher utility in the mailcap package did not properly restrict the execution of certain file types. An attacker could use this issue to escape a sandboxed application and execute arbitrary code on the host operating system.
CSIRTS triage
- What
- The cautious-launcher utility in the mailcap package does not properly restrict the execution of certain file types, allowing arbitrary code execution.
- Who is affected
- Deployments of the mailcap package using the cautious-launcher utility.
- Urgency
- Remediation is urgent due to the potential for arbitrary code execution.
- Action
- Update the mailcap package to the latest version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Advisory coverage (2)
- highCVE-2026-10037: A sandbox escape vulnerability exists in the OpenJDK packages provided in Ubuntu. The .jar MIM…nvd · 2026-07-08
- unknownUSN-8518-1: mailcap vulnerabilityubuntu · 2026-07-08
External references
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