CVE-2026-108757 PUBLISHED

Nexting pinclaw OpenClaw channel plugin through 0.3.0 contains a missing authentication vulnerability in src/core/http-router.ts that skips the authToken check on POST /pinclaw/send. Unauthenticated attackers reaching port 18790, which binds all interfaces by default, can inject blind prompts into the user's main OpenClaw agent session as user instructions.

• HaiND from the Post and Telecommunication Institute of Technology finder

• https://hackmd.io/@haind/nexting-pinclaw-send-unauth-agent-injection
• https://github.com/Nexting-ai/nexting/blob/a4b75f0429d3b1bf35eef68a296b2e72aa9c7483/plugin/src/core/http-router.ts#L296-L330
• https://github.com/Nexting-ai/nexting/blob/a4b75f0429d3b1bf35eef68a296b2e72aa9c7483/plugin/src/core/server.ts#L149
• https://www.npmjs.com/package/pinclaw
• VulnCheck Advisory: Nexting pinclaw through 0.3.0 Missing Authentication via POST /pinclaw/send

• Missing Authentication for Critical Function CWE