{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-53836: OpenClaw < 2026.5.12 - Allowlist Bypass via PowerShell Encoded-Command Aliases","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-53836","status":"final","version":"1","initial_release_date":"2026-06-12T21:56:59.927Z","current_release_date":"2026-06-15T17:22:39.050Z","revision_history":[{"date":"2026-06-12T21:56:59.927Z","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 2026.5.12 contains an allowlist bypass vulnerability in PowerShell encoded-command handling that allows attackers to execute encoded commands using abbreviated flag aliases not recognized by the allowlist parser. Remote authenticated operators can bypass execution allowlist checks by using unrecognized encoded-command alias forms to execute arbitrary PowerShell content.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-53836 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-53836"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-53836"},{"category":"external","summary":"GitHub Security Advisory (GHSA-j472-gf56-x589)","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-j472-gf56-x589"},{"category":"external","summary":"VulnCheck Advisory: OpenClaw < 2026.5.12 - Allowlist Bypass via PowerShell Encoded-Command Aliases","url":"https://www.vulncheck.com/advisories/openclaw-allowlist-bypass-via-powershell-encoded-command-aliases"}]},"product_tree":{"branches":[{"category":"vendor","name":"OpenClaw","branches":[{"category":"product_name","name":"OpenClaw","branches":[{"category":"product_version_range","name":"<2026.5.12","product":{"name":"OpenClaw OpenClaw <2026.5.12","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"2026.5.12","product":{"name":"OpenClaw OpenClaw 2026.5.12","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-53836","title":"OpenClaw < 2026.5.12 - Allowlist Bypass via PowerShell Encoded-Command Aliases","notes":[{"category":"description","text":"OpenClaw before 2026.5.12 contains an allowlist bypass vulnerability in PowerShell encoded-command handling that allows attackers to execute encoded commands using abbreviated flag aliases not recognized by the allowlist parser. Remote authenticated operators can bypass execution allowlist checks by using unrecognized encoded-command alias forms to execute arbitrary PowerShell content.","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:H/SC:N/SI:N/SA:N","baseScore":8.7,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 2026.5.12.","product_ids":["CSAFPID-1"]}]}]}