Not scored
CVE-2026-25520
SandboxJS has a Sandbox Escape
nyarivSandboxJS
Status
- Not in CISA KEV
Exploit probabilityEPSSchecked 25 Oct
0.9%probability of exploitation in the next 30 days
Higher than 58% of scored CVEs
SeverityCVSS
–Not scored yet
Description NVD
SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can be used to execute arbitrary code outside of the sandbox. This vulnerability is fixed in 0.8.29.
Coverage 1 article · 1 outlet
- Code Red: 4 Critical SandboxJS Flaws (CVSS 10.0) Allow Host TakeoverSecurityOnline · first in our coverage