VulncastBriefing archive

Weekly Brief - 2026-10-19

· 5155 vulnerabilities · 11 min listen

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CVE-2026-96012

critical · CVSS 9.9 · IBM Db2 Mirror for i

IBM Db2 Mirror for i 7.4, 7.5, and 7.6 is vulnerable to privilege escalation. An authenticated attacker could craft a malicious request that bypasses additional authorization and input validation checks to execute malicious code. An attacker could exploit this vulnerability to obtain elevated privileges on the system.

  • Privilege Escalation
  • Remote Code Execution
  • database
  • midrange system

CVE-2026-90532

critical · CVSS 10 · Adobe Experience Manager

Adobe Experience Manager is affected by an Incorrect Authorization vulnerability that could result in arbitrary code execution in the context of the current user, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue does not require user interaction. Scope is changed.

  • Remote Code Execution
  • Incorrect Authorization
  • web application

CVE-2026-96113

critical · CVSS 9.8 · Microsoft DNS Server

Heap-based buffer overflow in DNS Server allows an unauthorized attacker to execute code over a network.

  • Buffer Overflow
  • network service

CVE-2026-97229

critical · CVSS 10 · GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server via a specially crafted regular expression in a CI/CD configuration, due to insufficient regular expression validation.

  • Remote Code Execution
  • devops platform

CVE-2026-33796

critical · CVSS 9.8 · Juniper Networks Junos OS

A Stack-based Buffer Overflow vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured external BGP neighbor to execute arbitrary commands with root privileges via BMP route monitoring.

  • Buffer Overflow
  • Remote Code Execution
  • router firmware
  • network operating system

CVE-2026-76519

critical · CVSS 9.8 · Cisco Secure Email Gateway

A vulnerability in the Advanced Malware Protection (AMP) feature of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system. This vulnerability is due to improper handling of email attachments when the file reputation service is enabled. An attacker could exploit this vulnerability by sending an email that contains a crafted attachment through an affected device. A successful exploit could allow the attacker to write arbitrary files and execute commands with root privileges on the underlying operating system.

  • Remote Code Execution
  • Arbitrary File Write
  • email security

CVE-2026-84731

critical · CVSS 9.8 · nutanix aos

An unauthenticated remote attacker can bypass authentication and gain full access to administrative API endpoints in Nutanix Prism Element by including a crafted internal management HTTP header. The vulnerability is caused by a misconfiguration in the application's authentication filters. Consequently, the server responds with a Set-Cookie header containing a valid JSESSIONID. This session cookie decodes to a JSON Web Token (JWT) granting maximum cluster administrative privileges. Successful exploitation allows the attacker to execute root-level commands on all Controller VMs (CVMs) in the cluster, leading to complete cluster destruction and unauthorized access to VM memory and virtual disks.

CVE-2026-109515

critical · CVSS 9.8 · MailOptin

The MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.2.78.6 This is due to the `subscribe_to_email_list` endpoint accepting an attacker-supplied `optin_data[form_custom_field_mappings]` parameter without any allow-list validation on destination keys, allowing the attacker-controlled mapping to override the administrator's saved mapping and pass arbitrary `wp_users` column names — including `ID` and `user_pass` — directly into `wp_insert_user()` via the `subscribe()` function. This makes it possible for unauthenticated attackers to force `wp_insert_user()` into UPDATE mode on any existing account by supplying a target user's numeric `ID`, overwrite that account's password with a pre-hashed value of their choosing, and thereby take over any WordPress user account — including administrators — leading to full site compromise. Exploitation requires that a WordPress User Registration opt-in form is published somewhere on the site, though the form's UUID is visible in page source and no authentication, nonce, or capability check is required to reach the vulnerable endpoint.

  • Privilege Escalation
  • Authentication Bypass
  • wordpress
  • plugin
  • web application

CVE-2026-92262

critical · CVSS 9.9 · MariaDB Server

MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the #mysql50# bypass prefix is affected because it allows the #mysql50# prefix to bypass normal table-name filesystem encoding. An attacker can trigger the issue with a table name using the #mysql50# prefix, then use a #mysql50# table name to access files under their legacy unencoded name and cause crashes, data corruption, data exfiltration, or remote code execution. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.

  • Denial Of Service
  • Data Corruption
  • Remote Code Execution
  • database server

CVE-2026-111911

critical · CVSS 9.8 · phpMyFAQ

phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn registration endpoints attach credentials to any account without authentication or challenge validation. Attackers can stage a victim username, submit a forged fmt=none attestation to register a passkey, then log in bypassing passwords and TOTP for account takeover.

  • Authentication Bypass
  • php
  • web application