CVE-2026-5752

CVE-2026-5752 is a critical-severity vulnerability with a CVSS 3.x base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Sandbox Escape Vulnerability in Terrarium allows arbitrary code execution with root privileges on a host process via JavaScript prototype chain traversal.

Frequently asked questions

What is CVE-2026-5752?
Sandbox Escape Vulnerability in Terrarium allows arbitrary code execution with root privileges on a host process via JavaScript prototype chain traversal.
How severe is CVE-2026-5752?
CVE-2026-5752 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5752 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5752?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-5752 have an EU (EUVD) identifier?
Yes. CVE-2026-5752 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22676.
When was CVE-2026-5752 published?
CVE-2026-5752 was published on 2026-04-14 and last updated on 2026-06-17.

References