CVE-2026-53818
Last modified
CVE-2026-53818 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. OpenClaw before 2026.4.24 contains an authorization bypass vulnerability in the MCP loopback feature that allows non-owner callers to skip owner-only tool policies and before-tool-call hooks. Attackers can invoke owner-only behavior through the affected loopback path to execute restricted tools when the feature is enabled and reachable.. EPSS estimates a 0.10% chance of exploitation in the next 30 days.
Description
OpenClaw before 2026.4.24 contains an authorization bypass vulnerability in the MCP loopback feature that allows non-owner callers to skip owner-only tool policies and before-tool-call hooks. Attackers can invoke owner-only behavior through the affected loopback path to execute restricted tools when the feature is enabled and reachable.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openclaw | Openclaw | < 2026.4.24 |
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-rj6p-xmxr-qj4hMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-53818?
How severe is CVE-2026-53818?
How do I fix CVE-2026-53818?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-53812OpenClaw before 2026.5.18 contains a server-side request for…7.7
- CVE-2026-53813OpenClaw before 2026.4.25 contains a path traversal vulnerab…7.8
- CVE-2026-53814OpenClaw before 2026.5.20 contains a privilege escalation vu…8.7
- CVE-2026-53815OpenClaw before 2026.5.19 contains an authorization bypass v…7.1
- CVE-2026-53816OpenClaw before 2026.5.18 contains an insufficient provenanc…8.6
- CVE-2026-53817OpenClaw before 2026.5.22 contains a locality validation vul…8.8
- CVE-2026-53819OpenClaw before 2026.5.27 contains an arbitrary code executi…7.8
- CVE-2026-5382An issue that could expose records outside of the authorized…3
- CVE-2026-53820OpenClaw before 2026.5.12 contains an exec denylist bypass v…6.9
- CVE-2026-53821OpenClaw before 2026.5.18 accepts WebSocket client-declared …8.8
- CVE-2026-53822OpenClaw before 2026.5.18 contains a command injection vulne…8.8
- CVE-2026-53823OpenClaw before 2026.5.3 contains a privilege escalation vul…8.6
Are you affected by CVE-2026-53818?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST