Auth bypass in Nexting Pinclaw
CVE-2026-108757
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.
Vulnerability class: Broken Authentication
Published .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind/nexting-pinclaw-send-unauth-agent-injection (third-party-advisory)
- github.com/Nexting-ai/nexting/blob/a4b75f0429d3b1bf35eef68a296b2e72aa9c7483/plu… (technical-description)
- github.com/Nexting-ai/nexting/blob/a4b75f0429d3b1bf35eef68a296b2e72aa9c7483/plu… (technical-description)
- www.npmjs.com/package/pinclaw (product)
- www.vulncheck.com/advisories/nexting-pinclaw-through-0.3.0-missing-authenticati… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108757?
- CVE-2026-108757 is a medium-severity vulnerability in Nexting Pinclaw, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-10-11.
- How severe is CVE-2026-108757?
- Medium severity. CVSS v3 base score is 6.5 out of 10.