Alertas de Seguridad de la Información

Una complejidad algorítmica ineficiente en la verificación de firmas DKIM y ARC en Progressive Robot hMailServer 6.0.0 a 6.3.5 permite a atacantes remotos no autenticados saturar servidores de correo mediante mensajes especialmente crafted. El procesamiento de encabezados crece exponencialmente, causando consumo excesivo de recursos y caída del servicio de correo, impactando directamente la comunicación empresarial en organizaciones que dependen de este servidor.

Vault and Vault Enterprise did not consistently evaluate ACL policies against the canonical form of resource and policy names. This may allow an authenticated user with delegated permissions to bypass an explicit deny restriction and access a protected resource or assign a denied policy, potentially leading to privilege escalation. This vulnerability (CVE-2026-89322) is fixed in Vault Community Ed…

The block sync download path in Zebra (zebrad) before 6.3.0 reads a block's height from its unvalidated coinbase scriptSig and drops blocks that appear too far behind the tip before consensus validation, without penalizing the supplying peer. Because V5 transaction IDs exclude the scriptSig, a malicious peer can repeatedly serve a canonical block whose coinbase claims height 1 while keeping the re…