CVE-2026-43898
CVE-2026-43898
10.0
CriticalPublished:
Last updated:
Source:security-advisories@github.com
Modified
Weakness (CWE)
CVSS Vector
v3.1- Attack Vector
- Network
- Attack Complexity
- Low
- Privileges Required
- None
- User Interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Description
SandboxJS is a JavaScript sandboxing library. Prior to 0.9.6, sandbox-defined functions expose Function.caller, allowing sandboxed code to recover the internal LispType.Call runtime callback. That callback can then be invoked with attacker-controlled fake context and obj values to extract blocked host statics, recover the real host Function constructor, and execute arbitrary host JavaScript. This vulnerability is fixed in 0.9.6.
References
security-advisories@github.com
https://github.com/nyariv/SandboxJS/commit/826865251232611ec94078bab5a18ec875dad4a5security-advisories@github.com
https://github.com/nyariv/SandboxJS/security/advisories/GHSA-g8f2-4f4f-5jqw134c704f-9b21-4f2e-91b3-4a467353bcc0
https://github.com/nyariv/SandboxJS/security/advisories/GHSA-g8f2-4f4f-5jqw