CVE-2026-34211 — SandboxJS: Stack overflow DoS via deeply nested expressions in recursive descent parser

CVE-2026-34211

SandboxJS: Stack overflow DoS via deeply nested expressions in recursive descent parser PUBLISHED

Description (CNA)

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, the @nyariv/sandboxjs parser contains unbounded recursion in the restOfExp function and the lispify/lispifyExpr call chain. An attacker can crash any Node.js process that parses untrusted input by supplying deeply nested expressions (e.g., ~2000 nested parentheses), causing a RangeError: Maximum call stack size exceeded that terminates the process. This vulnerability is fixed in 0.8.36.

Affected (CNA)

Vendor / product	Versions
nyariv / SandboxJS	affected < 0.8.36

CWE

CWE-674

References

https://github.com/nyariv/SandboxJS/security/advisories/GHSA-8pfc-jjgw-6g26

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.