Falhas do tipo CWE-770

1.846 resultados

Alocação de recursos sem limite (negação de serviço por esgotamento)

A aplicação aloca recursos (memória, conexões, arquivos, threads) a pedido de um usuário sem impor limites, permitindo que um atacante esgote todos os recursos disponíveis e derrube o serviço. É basicamente deixar a porta aberta para qualquer um encher a caixa d'água até transbordar.

Exemplo

Um servidor web que cria uma nova thread para cada requisição HTTP recebida, sem limite. Um atacante envia milhares de requisições simultâneas e esgota o pool de threads, tornando o servidor inresponsivo para usuários legítimos — é negação de serviço puro.

Como mitigar

Implemente limites rigorosos: rate limiting (requisições por IP/usuário), quotas de recursos, pool de threads/conexões com tamanho máximo, timeout em operações, e monitoramento de consumo. Valide tamanhos de entrada e rejeite alocações que excedam os limites configurados.

CVE-2026-22025MEDIUMCryptoLib Memory Leak on HTTP Error Response in KMC ClientEPSS 0.5%CVE-2026-54156HIGHnode-opcua: Unbounded nonce cache enables unauthenticated heap exhaustion DoSEPSS 0.5%CVE-2023-51297MEDIUMA lack of rate limiting in the 'Email Settings' feature of PHPJabbers Hotel Booking System v4.0 allows attackers to send an excessive amountEPSS 0.5%CVE-2025-68456HIGHUnauthenticated Craft CMS users can trigger a database backupEPSS 0.5%CVE-2020-36907HIGHExtreme Networks Aerohive HiveOS <=11.x 11.x Unauthenticated Remote Denial of ServiceEPSS 0.5%CVE-2026-32688HIGHAtom table exhaustion via HTTP/2 :scheme pseudo-header in plug_cowboyEPSS 0.5%CVE-2023-5573MEDIUMAllocation of Resources Without Limits or Throttling in vriteio/vriteEPSS 0.5%CVE-2024-52796MEDIUMPassword Pusher's rate limiter can be bypassed by forging proxy headersEPSS 0.5%CVE-2026-40073HIGHSvelteKit has a BODY_SIZE_LIMIT bypass in @sveltejs/adapter-nodeEPSS 0.5%CVE-2023-37906MEDIUMDiscourse vulnerable to DoS via post edit reasonEPSS 0.5%CVE-2026-32049HIGHOpenClaw < 2026.2.22 - Denial of Service via Inbound Media Download Byte Limit BypassEPSS 0.5%CVE-2026-46629MEDIUMTwig: Unbounded formatter memoisation in twig/intl-extra keyed on template-controlled argumentsEPSS 0.5%CVE-2023-3242HIGHImproper initialization implementation in Portmapper used in B&R Industrial Automation Automation Runtime <G4.93 allows unauthenticated netwEPSS 0.5%CVE-2025-8885MEDIUMPossible DOS in processing specially formed ASN.1 Object IdentifiersEPSS 0.5%CVE-2024-55195HIGHAn allocation-size-too-big bug in the component /imagebuf.cpp of OpenImageIO v3.1.0.0dev may cause a Denial of Service (DoS) when the prograEPSS 0.5%CVE-2024-6598HIGHDenial-of-service on KNIME Business Hub when certain jobs are executedEPSS 0.5%CVE-2026-41899MEDIUMCoolify unauthenticated feedback endpoint allows Discord webhook abuseEPSS 0.5%CVE-2019-3882MEDIUMA flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's locked memory limit. If a device iEPSS 0.5%CVE-2023-40542HIGHBIG-IP TCP Profile vulnerabilityEPSS 0.5%CVE-2025-21495MEDIUMVulnerability in the MySQL Enterprise Firewall product of Oracle MySQL (component: Firewall). Supported versions that are affected are 8.0.EPSS 0.5%