PT-2026-48748 · Openclaw · Openclaw

Keensecuritylab + 1 · CVE-2026-53818 · Published 2026-06-11 · Updated 2026-07-02

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions OpenClaw versions prior to 2026.4.24

Description An authorization bypass exists in the MCP loopback feature. This allows non-owner callers to circumvent owner-only tool policies and before-tool-call hooks. When the feature is enabled and reachable, attackers can use the affected loopback path to invoke owner-only behavior and execute restricted tools.

Recommendations Update to version 2026.4.24. As a temporary workaround, disable the MCP loopback feature to prevent unauthorized execution of restricted tools.

Exploit

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-53818

GHSA-RJ6P-XMXR-QJ4H

Affected Products

Openclaw

References · 8

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53818.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-53818 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-rj6p-xmxr-qj4h · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-53818 · Security Note
• https://github.com/openclaw/openclaw · Note
• https://github.com/openclaw/openclaw/security/advisories/GHSA-rj6p-xmxr-qj4h · Patch, Vendor Advisory
• https://t.me/CVEtracker/56621 · Telegram Post
• https://vulncheck.com/advisories/openclaw-owner-only-tool-policy-bypass-via-mcp-loopback · Note