CVE-2026-53820

medium

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.

References

https://www.vulncheck.com/advisories/openclaw-exec-denylist-bypass-in-bundle-mcp-loopback-session-spawn

https://github.com/openclaw/openclaw/security/advisories/GHSA-qh2f-99mv-mrcf

Details

Source: Mitre, NVD

Published: 2026-06-12

Updated: 2026-06-12

Risk Information

CVSS v2

Base Score: 5.7

Vector: CVSS2#AV:L/AC:L/Au:S/C:P/I:C/A:P

Severity: Medium

CVSS v3

Base Score: 6.6

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

Severity: Medium

CVSS v4

Base Score: 6.9

Vector: 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

Severity: Medium

EPSS

EPSS: 0.00012