VulncastBriefing archive

Daily Brief - 2026-09-09

· 5 vulnerabilities · 7 min listen

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CVE-2026-82071

high · CVSS 8.1 · MongoDB Server

Insufficient validation of storage engine configuration options in MongoDB Server allows an authenticated user with write privileges to supply crafted parameters during collection creation that override internal storage metadata. This results in an out-of-bounds memory write in the server process, causing a denial of service via server crash, with potential for further impact including arbitrary code execution.

  • Out-Of-Bounds Write
  • Denial Of Service
  • Remote Code Execution
  • database
  • nosql
  • server application

CVE-2026-83998

high · CVSS 8.8 · Microsoft Remote Desktop Client

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

  • Buffer Overflow
  • Remote Code Execution
  • remote desktop protocol

CVE-2026-85982

critical · CVSS 9 · Auth0 AD/LDAP Connector

The Auth0 AD/LDAP Connector is vulnerable to stored Cross-Site Scripting (XSS) issues due to improper HTML encoding of data in search results and updater log content displayed in the admin panel. An authenticated user with privileges to modify directory attributes, or a low-privileged local user on the host where the connector is installed, could insert script content. This script content could then execute in an administrator's browser when they view the affected search results or update logs.

  • Cross-Site Scripting
  • directory service
  • web application
  • ldap

CVE-2026-86732

high · CVSS 8.8 · Craft CMS

Craft CMS versions before 5.10.12 contain a remote code execution vulnerability in the element-index endpoint that allows authenticated content editors to instantiate arbitrary classes through the criteria parameter. Attackers can inject a malicious class via criteria[withTransforms][0][class] that reaches ImageTransforms::normalizeTransform(), then use a PHP gadget chain with yii\rbac\PhpManager to execute code by pointing itemFile to a request log containing PHP payload in the User-Agent header.

  • Remote Code Execution
  • Insecure Deserialization
  • web application
  • php

CVE-2026-86993

n8n

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, a Log Streaming event destination could reference a generic HTTP credential and decrypt whichever credential ID it named without an ownership check. A user with a custom global role carrying Log Streaming scopes could select a credential belonging to another project and send its decrypted secret to an attacker-controlled endpoint. The affected authorization boundary is packages/cli/src/modules/log-streaming.ee/destinations/destination-credentials-access.ts and the credential:read scope. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

  • Broken Access Control
  • Credential Exposure
  • web application