Falhas do tipo CWE-400

3.008 resultados

Consumo não controlado de recursos

A aplicação não limita adequadamente o consumo de recursos (memória, CPU, conexões, disco) em resposta a requisições ou eventos, permitindo que um atacante esgote os recursos disponíveis. Resultado: negação de serviço, travamento ou crash da aplicação.

Exemplo

Um servidor web que aceita uploads sem limite de tamanho permite que um atacante envie um arquivo gigante, preenchendo o disco e derrubando o serviço. Outro cenário: aceitar conexões TCP indefinidamente sem timeout, até esgotar o número máximo de sockets do sistema operacional.

Como mitigar

Implemente limites explícitos: tamanho máximo de requisição/arquivo, timeout de conexão, limite de memória por processo, rate limiting. Use filas com capacidade máxima e rejeite requisições excedentes com mensagem de erro clara (HTTP 429, por exemplo).

CVE-2024-4183MEDIUMMattermost versions 8.1.x before 8.1.12, 9.6.x before 9.6.1, 9.5.x before 9.5.3, 9.4.x before 9.4.5 fail to limit the number of active sessiEPSS 0.6%CVE-2025-20340HIGHCisco IOS XR Address Resolution Protocol Broadcast Storm VulnerabilityEPSS 0.6%CVE-2026-71643HIGHAn issue in ZJU-FAST-Lab EGO-Planner-v2 All versions up to commit 5c99a95880401e2599638d567abc0e240396cb42 allows an attacker to cause a denEPSS 0.6%CVE-2026-53504HIGHThumbor has Regex Denial of Service (ReDoS) in `convolution` filterEPSS 0.6%CVE-2026-68523HIGHFulgur: Unbounded page slicing from attacker-controlled CSS height causes denial of serviceEPSS 0.6%CVE-2026-86000MEDIUMSoup Sieve: Polynomial-time ReDoS (O(n²)) in the `IDENTIFIER` / `VALUE` selector sub-patternsEPSS 0.6%CVE-2026-68537HIGHFulgur: Unbounded page slicing from attacker-controlled CSS height causes denial of serviceEPSS 0.6%CVE-2026-71647HIGHAn issue in EGO-Planner-v2 All versions up to commit 5c99a95880401e2599638d567abc0e240396cb42 allows an attacker to cause a denial of servicEPSS 0.6%CVE-2026-86201HIGHPocketMine-MP before 5.41.1 LogDoS via LoginPacket clientDataEPSS 0.6%CVE-2026-71641HIGHAn issue in ZJU-FAST-Lab EGO-Planner-v2 All versions up to commit 5c99a95880401e2599638d567abc0e240396cb42 allows an attacker to cause a denEPSS 0.6%CVE-2026-56018HIGHJavaScript::Minifier::XS versions before 0.16 for Perl leak memory on every call to minify(), allowing unbounded memory growthEPSS 0.6%CVE-2026-73561HIGHHub: Unauthenticated WebSocket RPC Waiter Resource ExhaustionEPSS 0.6%CVE-2026-77384HIGHlibp2p: Circuit relay v2 server reservation refresh leaks abort listeners and allows remote resource exhaustionEPSS 0.6%CVE-2026-85999MEDIUMSoup Sieve: Polynomial-time ReDoS (O(n²)) in the whitespace/comment trimming regex `RE_WS_END` (triggers on VALID selectors)EPSS 0.6%CVE-2026-53505HIGHThumbor proportion filter allows unbounded post-transform resize leading to remote DoSEPSS 0.6%CVE-2026-79378HIGHAn issue in the btm_acl_handle() function of Bestechnic Co., Ltd BES2300 Bluetooth Audio SoC firmware v3.x and earlier allows attackers to cEPSS 0.6%CVE-2026-42493HIGHx86 shadow paging is deprecatedEPSS 0.6%CVE-2026-63495HIGHLibevent: Unbounded memory accumulation in WebSocket server via fragmented framesEPSS 0.6%CVE-2026-50196HIGHSteeltoe.Discovery.Eureka: Unrecognized DataCenterInfo.Name poisons entire registry fetchEPSS 0.6%CVE-2026-94640HIGHRpcbind: unbounded memory allocation in rpcbind statistics tracking allows unauthenticated remote denial of serviceEPSS 0.6%