{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-53814: OpenClaw < 2026.5.20 - Privilege Escalation via Hook-Triggered CLI MCP Tool Authority","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-53814","status":"final","version":"1","initial_release_date":"2026-06-11T20:08:31.474Z","current_release_date":"2026-06-13T03:55:39.726Z","revision_history":[{"date":"2026-06-11T20:08:31.474Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"OpenClaw before 2026.5.20 contains a privilege escalation vulnerability where hook-triggered agent runs incorrectly receive owner-scoped MCP loopback authority instead of hook-appropriate scope. Attackers with a valid hook token can exploit the /hooks/agent endpoint to cause spawned CLI runtimes to access or invoke owner-only MCP tools, potentially executing privileged actions like persistent cron state modifications.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-53814 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-53814"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-53814"},{"category":"external","summary":"GitHub Security Advisory (GHSA-6fvr-66p3-3qj4)","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-6fvr-66p3-3qj4"},{"category":"external","summary":"vulncheck.com","url":"https://www.vulncheck.com/advisories/openclaw-privilege-escalation-via-hook-triggered-cli-mcp-tool-authority"}]},"product_tree":{"branches":[{"category":"vendor","name":"OpenClaw","branches":[{"category":"product_name","name":"OpenClaw","branches":[{"category":"product_version_range","name":"<2026.5.20","product":{"name":"OpenClaw OpenClaw <2026.5.20","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"2026.5.20","product":{"name":"OpenClaw OpenClaw 2026.5.20","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-53814","title":"OpenClaw < 2026.5.20 - Privilege Escalation via Hook-Triggered CLI MCP Tool Authority","notes":[{"category":"description","text":"OpenClaw before 2026.5.20 contains a privilege escalation vulnerability where hook-triggered agent runs incorrectly receive owner-scoped MCP loopback authority instead of hook-appropriate scope. Attackers with a valid hook token can exploit the /hooks/agent endpoint to cause spawned CLI runtimes to access or invoke owner-only MCP tools, potentially executing privileged actions like persistent cron state modifications.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"],"fixed":["CSAFPID-2"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","baseScore":8.7,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 2026.5.20.","product_ids":["CSAFPID-1"],"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-6fvr-66p3-3qj4"}]}]}