CVE-2026-53820

MEDIUMCVSS 6.9/10EPSS 0.09%

Last modified

CVE-2026-53820 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. OpenClaw before 2026.5.12 contains an exec denylist bypass vulnerability in the bundle MCP loopback session-spawn path that allows authenticated callers to bypass intended command restrictions. Attackers can reach the affected bundled MCP session-spawn path to start sessions with broader command reach than intended.. EPSS estimates a 0.09% chance of exploitation in the next 30 days.

Description

OpenClaw before 2026.5.12 contains an exec denylist bypass vulnerability in the bundle MCP loopback session-spawn path that allows authenticated callers to bypass intended command restrictions. Attackers can reach the affected bundled MCP session-spawn path to start sessions with broader command reach than intended.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
OpenclawOpenclaw< 2026.5.12

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-53820?
OpenClaw before 2026.5.12 contains an exec denylist bypass vulnerability in the bundle MCP loopback session-spawn path that allows authenticated callers to bypass intended command restrictions. Attackers can reach the affected bundled MCP session-spawn path to start sessions with broader command reach than intended.
How severe is CVE-2026-53820?
CVE-2026-53820 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.09% probability of exploitation in the next 30 days.
How do I fix CVE-2026-53820?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

Are you affected by CVE-2026-53820?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST