CVE-2026-28395mediumCWE-1327

CVE-2026-28395: medium-severity vulnerability in OpenClaw

OpenClaw 2026.1.14-1 < 2026.2.12 - Unintended Public Binding of Chrome Extension Relay via Wildcard cdpUrl

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.3epss 0.5%
In short

OpenClaw's Chrome extension relay server incorrectly treats wildcard addresses as localhost, causing it to bind to all network interfaces instead of just your computer. This lets attackers on the network discover and attack the relay server.

Technical detail

The vulnerability stems from improper network binding logic in the relay server component that misinterprets wildcard cdpUrl configurations as loopback bindings. Remote attackers can access relay HTTP/WebSocket endpoints across the network to enumerate service presence, extract port information, and launch denial-of-service or brute-force attacks against relay authentication tokens.

Summary generated and translated by AI from the official description.
OpenClaw version 2026.1.14-1 prior to 2026.2.12 contains an improper network binding vulnerability in the Chrome extension (must be installed and enabled) relay server that treats wildcard hosts as loopback addresses, allowing the relay HTTP/WS server to bind to all interfaces when a wildcard cdpUrl is configured. Remote attackers can access relay HTTP endpoints off-host to leak service presence and port information, or conduct denial-of-service and brute-force attacks against the relay token header.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
OpenClaw · OpenClaw
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