VulnerabilityAwaiting Analysis

CVE-2026-5752

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

CRITICAL 9.3EPSS 0.21%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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

CVSS 3.1: 9.3 CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.21% probability · 11th percentile
CISA KEV: Not listed
Source: cret@cert.org

References

https://github.com/cohere-ai/cohere-terrarium
https://kb.cert.org/vuls/id/414811
https://www.kb.cert.org/vuls/id/414811

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.