Falhas do tipo CWE-203

398 resultados

Discrepância Observável em Comportamento

Ocorre quando o sistema exibe comportamentos ou mensagens diferentes dependendo de informações secretas (senha, token, chave), permitindo que um atacante deduza essas informações através de análise de resposta. O perigo está em vazar conhecimento que deveria ser privado por meio de canais laterais, como tempo de resposta, mensagens de erro ou mudanças visuais.

Exemplo

Um formulário de login que retorna 'Usuário não existe' para usuários inválidos e 'Senha incorreta' para usuários válidos com senha errada. Um atacante usa essas mensagens diferentes para enumerar contas válidas sem nunca adivinhar a senha correta.

Como mitigar

Padronize respostas do sistema: retorne sempre a mesma mensagem genérica (ex: 'Credenciais inválidas') e o mesmo tempo de resposta, independentemente de qual parte falhou. Use técnicas como constant-time comparison para operações sensíveis e evite vazar informações através de timing, códigos HTTP diferenciados ou feedback textual discriminador.

CVE-2026-104415LOWGhost 0.7.2 before 6.64.0 Password Hash Ordering Disclosure via Admin APIEPSS 0.2%CVE-2026-106336MEDIUMObservable discrepancy in Paint in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to leak cross-origin data via a crafted HTEPSS 0.2%CVE-2026-11795MEDIUMUser Enumeration in Softtr's E-Commerce PackEPSS 0.2%CVE-2026-11289MEDIUMSide-channel information leakage in Paint in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a EPSS 0.2%CVE-2026-21386MEDIUMPrivate channel enumeration via /mute slash commandEPSS 0.2%CVE-2026-121223—Observable discrepancy in Media in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to leak cross-origin data via a crafted HTEPSS 0.2%CVE-2025-8774LOWriscv-boom SonicBOOM L1 Data Cache timing discrepancyEPSS 0.2%CVE-2026-18560MEDIUMImproper order of authorisations in Mattermost GetFile API leads to an authenticated user to determine a post’s quarantined statusEPSS 0.2%CVE-2023-5410HIGHA potential security vulnerability has been reported in the system BIOS of certain HP PC products, which might allow memory tampering. HP isEPSS 0.2%CVE-2026-110141LOWObservable discrepancy in Media in Google Chrome prior to 155.0.8059.79 allowed a remote attacker to leak cross-origin data via a crafted HTEPSS 0.2%CVE-2025-65185LOWThere is a username enumeration via local user login in Entrinsik Informer v5.10.1 which allows malicious users to enumerate users by enteriEPSS 0.2%CVE-2024-8993MEDIUMSome Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.EPSS 0.2%CVE-2024-47153MEDIUMSome Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.EPSS 0.2%CVE-2024-8994MEDIUMSome Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.EPSS 0.2%CVE-2024-47155MEDIUMSome Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.EPSS 0.2%CVE-2024-47154MEDIUMSome Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.EPSS 0.2%CVE-2026-4040MEDIUMOpenClaw File Existence tools.exec.safeBins information exposureEPSS 0.2%CVE-2024-8992MEDIUMSome Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.EPSS 0.2%CVE-2024-47149LOWSome Honor products are affected by incorrect privilege assignment vulnerability, successful exploitation could cause device service exceptiEPSS 0.2%CVE-2024-47150LOWSome Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.EPSS 0.1%