Vulnerability · Published Sep 26, 2026 · Assigned by VulnCheck

CVE-2026-100556OpenClaw before 2026.8.1 Authentication Bypass via Session Reset

Medium 6.3

In plain English

A medium-severity incorrect authorization in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.3%top 79.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenClaw (npm package openclaw) versions >= 2026.5.2 and < 2026.8.1 contain an incorrect authorization vulnerability in WhatsApp group handling. A group sender who is admitted for ordinary messages but denied by commands.allowFrom or owner command authorization can issue the /new <model> command to reset the shared group session and persist a provider and model override. This allows a command-denied group member to select a provider and model already permitted by the operator for subsequent turns in the shared group session, potentially changing provider routing, cost, data flow, or availability. It does not allow adding a new provider or host command execution. The issue is fixed in version 2026.8.1.

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	2026.5.2 – before 2026.8.1

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References

GitHub Security Advisory (GHSA-mm7m-wcgh-8mfq) vendor-advisory
VulnCheck Advisory: OpenClaw before 2026.8.1 Authentication Bypass via Session Reset third-party-advisory