{"cve":"CVE-2026-34211","nvd":{"published":"2026-04-06T16:16:34.743","modified":"2026-10-26T22:10:00.163","status":"Analyzed","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-674"],"references":["https://github.com/nyariv/SandboxJS/security/advisories/GHSA-8pfc-jjgw-6g26"],"products":["nyariv:sandboxjs"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-34211","score":0.00395,"percentile":0.33477,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-8pfc-jjgw-6g26","url":"https://osv.dev/vulnerability/GHSA-8pfc-jjgw-6g26","summary":"SandboxJS: Stack overflow DoS via deeply nested expressions in recursive descent parser","modified":"2026-04-06T23:34:44.531035Z","packages":[{"ecosystem":"npm","name":"@nyariv/sandboxjs","purl":"pkg:npm/%40nyariv/sandboxjs","ranges":["<0.8.36"],"fixed":["0.8.36"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}