Omisión de autenticación en cPanel

Fecha 30/04/2026
Importancia 5 - Crítica

Recursos Afectados
La vulnerabilidad afecta a todas las versiones posteriores a a la 11.40.

Descripción
cPanel ha publicado una vulnerabilidad de severidad crítica que en caso de ser explotada podría permitir a un atacante omitir la autenticación en el software.

Solución
cPanel ha publicado un parche para las siguientes versiones de cPanel y WHM:
11.86.0.41;
11.110.0.97;
11.118.0.63;
11.126.0.54;
11.130.0.19;
11.132.0.29;
11.136.0.5;
11.134.0.20.
Para WP Squared se ha publicado la versión 136.1.7.
Se recomienda seguir las pautas del aviso oficial en lazado en referencias para actualizar a la versión correspondiente.

https://www.incibe.es/incibe-cert/alerta-temprana/avisos/omision-de-autenticacion-en-cpanel

Contaminación de prototipos en n8n

Fecha 30/04/2026
Importancia 5 - Crítica

Recursos Afectados
Las siguientes versiones de n8n:
2.18.0;
Desde la 2.17.0 hasta la 2.17.3;
Menores a la 1.123.32.

Descripción
a-tallat y simonkoeck han descubierto 2 vulnerabilidades de severidad crítica que, en caso de ser explotadas, podrían permitir la ejecución de código en remoto.

Solución
Actualizar el producto a las siguientes versiones respectivamente:
2.18.1;
2.17.4;
1.123.32.
En caso de que no se sea posible instalar la actualización inmediatamente, se pueden aplicar, de forma temporal, las siguientes contramedidas:
Limitar los permisos de creación y edición de flujos de trabajo ( workflows) a solo usuarios en los que se confíe plenamente.
Deshabilitar el nodo XML añadiendo "n8n-nodes-base.xml" a la variable de entorno "NODES_EXCLUDE".

https://www.incibe.es/incibe-cert/alerta-temprana/avisos/contaminacion-de-prototipos-en-n8n

Researchers Discover Critical GitHub CVE-2026-3854 RCE Flaw Exploitable via Single Git Push

Cybersecurity researchers have disclosed details of a critical security vulnerability impacting GitHub.com and GitHub Enterprise Server that could allow an authenticated user to obtain remote code execution with a single "git push" command.

The flaw, tracked as CVE-2026-3854 (CVSS score: 8.7), is a case of command injection that could allow an attacker with push access to a repository to achieve remote code execution on the instance.

https://thehackernews.com/2026/04/researchers-discover-critical-github.html

CVE-2026-31431

Base Score: 7.8

Description
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.

https://nvd.nist.gov/vuln/detail/CVE-2026-31431

High Vulnerability in the Linux Kernel ("Copy Fail")

Temporary Mitigation
Disable the algif_aead kernel module persistently on all affected systems until a patched kernel is available:

echo "install algif_aead /bin/false" > /etc/modprobe.d/disable-algif.conf
rmmod algif_aead 2>/dev/null || true

This workaround does not affect dm-crypt/LUKS, kTLS, IPsec/XFRM, OpenSSL, GnuTLS, NSS, or SSH. It may affect applications explicitly configured to use the afalg engine or that bind aead/skcipher/hash sockets directly. Exposure can be assessed with lsof | grep AF_ALG.

Security Advisory: Firmware Update Required — Gen 6, Gen 7, and Gen 8 Firewalls

SonicWall has identified three vulnerabilities (CVEs) affecting Gen 6, Gen 7, and Gen 8 firewall platforms. These vulnerabilities require immediate firmware updates to maintain security posture. One CVE is rated High severity and two are rated medium severity.

Applies To
Gen 8 firewalls — patch available in firmware 8.2.0-8009
Gen 7 firewalls — patch available in firmware 7.3.2-7010
Gen 6 firewalls — patched firmware posted to MySonicWall on April 29, 2026

https://www.sonicwall.com/support/notices/security-advisory-firmware-update-required-gen-6-gen-7-and-gen-8-firewalls/kA1VN000001F03x0AC


Advisory ID SNWLID-2026-0004
First Published 2026-04-29
Workaround true

CVE CVE-2026-0204, CVE-2026-0205, CVE-2026-0206
CWE CWE-1390, CWE-35, CWE-121

CVSS v3 8.0

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0004

Pi-hole
Local privilege escalation via config-controlled path in root-executed service hooks

Package Pi-hole Core and FTL
Affected versions
>= v6.0
Patched versions
Core >=v6.4.2 FTL >=v6.6.1

https://github.com/pi-hole/pi-hole/security/advisories/GHSA-6w8x-p785-6pm4

CNA: Apache Software Foundation

CVSS 9.8

Published: 2026-05-01
Updated: 2026-05-01
Title: Apache MINA: AbstractIoBuffer.resolveClass() null-clazz Branch Skips acceptMatchers Filter — Full Object Deserialization RCE (take 2)

Description
The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed. The fix checks if the class is present in the accepted class filter before calling Class.forName(). Affected versions are Apache MINA 2.1.0 <= 2.1.11, and 2.2.0 <= 2.2.6. The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by applying the classname allowlist earlier. Affected are applications using Apache MINA that call IoBuffer.getObject(). Applications using Apache MINA are advised to upgrade.

https://www.cve.org/CVERecord?id=CVE-2026-42779

https://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0

CVE-2026-0300 PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal

CVSS-BT: 9.3

Description
A buffer overflow vulnerability in the User-ID™ Authentication Portal (aka Captive Portal) service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets.
The risk of this issue is greatly reduced if you secure access to the User-ID™ Authentication Portal per the best practice guidelines by restricting access to only trusted internal IP addresses.
Prisma Access, Cloud NGFW and Panorama appliances are not impacted by this vulnerability.

https://security.paloaltonetworks.com/CVE-2026-0300

Product Release Advisory - VMware Tanzu GemFire Management Console 1.4.4

Advisory ID: TNZ-2026-0260
Severity: Critical
Issue Date: 2026-05-05

Synopsis
Updated Spring, Tomcat and other libraries along with latest Prometheus version in OCI image with latest Photon image

VMware Tanzu Data Intelligence
VMware Tanzu Data Services Pack
VMware Tanzu Data Suite
VMware Tanzu Gemfire

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37439