CVE-2026-5752
Terrarium has a sandbox escape that lets attackers run any code with root privileges on the host. The flaw is triggered by JavaScript prototype chain traversal and can be exploited locally without user interaction.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
Terrarium (no specific versions listed).
Real-world impact
An attacker who can run code inside Terrarium can escape the sandbox and execute arbitrary commands as root on the host machine, potentially taking full control of the system.
Why this severity
The CVSS score is high because the attack requires only local access, no special privileges, and no user interaction, yet it gives the attacker complete control over the host. The vector shows low attack complexity, no required privileges, and a scope change that elevates the impact to all system resources.
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- Apr 14, 2026 · Apr 14, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Jul 24, 2026 · 12d agoAdvisory updatedThe NVD record was last revised.