{"cve":"CVE-2026-44995","nvd":{"published":"2026-05-11T18:16:39.387","modified":"2026-06-17T10:51:34.447","status":"Analyzed","description":"OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server configuration that allows attackers to execute arbitrary code. Malicious workspace configurations can pass dangerous startup variables like NODE_OPTIONS, LD_PRELOAD, or BASH_ENV to spawned MCP server processes, enabling code injection when operators start sessions using those servers.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":5.4},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","score":7.3},"cwes":["CWE-829"],"references":["https://github.com/openclaw/openclaw/commit/62fa5071896e95edc7f67d1cebc70a2859e283af","https://github.com/openclaw/openclaw/commit/85d86ebc4bf3d2226d39d132a484f4f7a299fa1b","https://github.com/openclaw/openclaw/security/advisories/GHSA-mj59-h3q9-ghfh","https://www.vulncheck.com/advisories/openclaw-arbitrary-code-execution-via-mcp-stdio-environment-variables"],"products":["openclaw:openclaw"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-44995","score":0.00136,"percentile":0.03052,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mj59-h3q9-ghfh","url":"https://osv.dev/vulnerability/GHSA-mj59-h3q9-ghfh","summary":"OpenClaw: MCP stdio server env could load dangerous startup variables from workspace config","modified":"2026-05-19T16:11:27.853296Z","packages":[{"ecosystem":"npm","name":"openclaw","purl":"pkg:npm/openclaw","ranges":["<2026.4.20"],"fixed":["2026.4.20"]}]}],"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."]}