CVE-2026-53820
MEDIUMOpenClaw < 2026.5.12 - Exec Denylist Bypass in Bundle MCP Loopback Session Spawn
Title source: cnaDescription
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 (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-qh2f-99mv-mrcf)
https://github.com/openclaw/openclaw/security/advisories/GHSA-qh2f-99mv-mrcf
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.5.12 - Exec Denylist Bypass in Bundle MCP Loopback Session Spawn
https://www.vulncheck.com/advisories/openclaw-exec-denylist-bypass-in-bundle-mcp-loopback-session-spawn
Scores
CVSS v3
6.6
EPSS
0.0010
EPSS Percentile
1.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-862
Status
published
Products (3)
OpenClaw/OpenClaw
< 2026.5.12
openclaw/openclaw
< 2026.5.12
OpenClaw/OpenClaw
2026.5.12
Published
Jun 12, 2026
Tracked Since
Jun 13, 2026