Security Vulnerabilities
Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.25.0 are vulnerable to an unauthenticated Regular Expression Denial of Service (ReDoS) attack within the WebSocket subscription handling logic. By injecting unescaped regex metacharacters into the `context` parameter of a stream subscription, an attacker can force the server's Node.js event loop into a catastrophic backtracking loop when evaluating long string identifiers (like the server's self UUID). This results in a total Denial of Service (DoS) where the server CPU spikes to 100% and becomes completely unresponsive to further API or socket requests. Version 2.25.0 contains a fix.
CVSS Score
7.5
EPSS Score
0.001
Published
2026-04-21
The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. Versions 6.5 through 7.17.0 allow arbitrary file writes to locations outside the intended output directory when processing notebooks containing crafted cell attachment filenames. The `ExtractAttachmentsPreprocessor` passes attachment filenames directly to the filesystem without sanitization, enabling path traversal attacks. This vulnerability provides complete control over both the destination path and file extension. Version 7.17.1 contains a patch.
CVSS Score
6.5
EPSS Score
0.0
Published
2026-04-21
OpenClaw before 2026.3.31 contains a server-side request forgery vulnerability in the marketplace plugin download functionality that allows remote attackers to make arbitrary network requests. Attackers can exploit unguarded fetch() calls to access internal resources or interact with external services on behalf of the affected system.
CVSS Score
4.8
EPSS Score
0.0
Published
2026-04-21
OpenClaw before 2026.3.28 contains an authorization bypass vulnerability in Discord text approval commands that allows non-approvers to resolve pending exec approvals. Attackers can send Discord text commands to bypass the channels.discord.execApprovals.approvers allowlist and approve pending host execution requests.
CVSS Score
8.7
EPSS Score
0.001
Published
2026-04-21
OpenClaw before 2026.3.31 contains a sandbox bypass vulnerability allowing attackers to escalate privileges via heartbeat context inheritance and senderIsOwner parameter manipulation. Attackers can exploit improper context validation to bypass sandbox restrictions and achieve unauthorized privilege escalation.
CVSS Score
9.0
EPSS Score
0.0
Published
2026-04-21
OpenClaw before 2026.3.31 contains an environment variable override vulnerability in host exec policy that fails to properly enforce proxy, TLS, Docker, and Git TLS controls. Attackers can bypass security controls by overriding environment variables to circumvent proxy settings, TLS verification, Docker restrictions, and Git TLS enforcement.
CVSS Score
2.0
EPSS Score
0.0
Published
2026-04-21
OpenClaw before 2026.3.31 contains a resource consumption vulnerability in Telegram audio preflight transcription that allows unauthorized group senders to trigger transcription processing. Attackers can exploit insufficient allowlist enforcement to cause resource or billing consumption by initiating audio preflight operations before authorization checks are applied.
CVSS Score
6.9
EPSS Score
0.001
Published
2026-04-21
OpenClaw before 2026.3.31 contains a server-side request forgery vulnerability in the marketplace plugin download functionality that allows attackers to access internal resources by following unvalidated redirects. The marketplace.ts module fails to restrict redirect destinations during archive downloads, enabling remote attackers to redirect requests to arbitrary internal or external servers.
CVSS Score
4.8
EPSS Score
0.0
Published
2026-04-21
OpenClaw before 2026.4.2 fails to enforce write scopes on the POST /sessions/:sessionKey/kill endpoint in identity-bearing HTTP modes. Read-scoped callers can terminate running subagent sessions by sending requests to this endpoint, bypassing authorization controls.
CVSS Score
5.3
EPSS Score
0.0
Published
2026-04-21
OpenClaw before 2026.3.28 contains an authorization bypass vulnerability in the chat.send gateway method where ACP-only provenance fields are gated by self-declared client metadata from WebSocket handshake rather than verified authorization state. Authenticated operator clients can spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge by manipulating client metadata during connection.
CVSS Score
7.1
EPSS Score
0.001
Published
2026-04-21