Weaknesses of type CWE-409

134 results

Manipulação inadequada de dados altamente compactados (amplificação de dados)

Ocorre quando uma aplicação processa dados compactados (ZIP, GZIP, etc.) sem validar ou limitar o tamanho descompactado, permitindo que um arquivo pequeno se expanda para gigabytes na memória. Um atacante envia um arquivo malicioso que causa consumo excessivo de CPU, memória ou disco, derribando o serviço.

Example

Um servidor aceita uploads de arquivos compactados para backup sem verificar o tamanho final. Um arquivo de 10 MB compactado se descompacta para 10 GB, esgotando a memória disponível e travando o servidor. Esse é o ataque 'zip bomb' clássico.

How to mitigate

Estabeleça limites: defina um tamanho máximo aceitável para dados descompactados antes de processar, implemente timeouts de descompactação, e monitore consumo de memória durante a expansão. Valide a integridade e origem dos arquivos compactados recebidos.

CVE-2026-72628MEDIUMImproper Handling of Highly Compressed Data in Kibana Leading to Denial of ServiceEPSS 0.3%CVE-2026-55195HIGHpy7zr: Decompression bomb (zip bomb) denial of service via unchecked extraction sizeEPSS 0.3%CVE-2026-47321HIGHApache MINA: Unbounded Decompression Amplification DoS in Zlib.inflateEPSS 0.3%CVE-2026-54556HIGHHttp4s: HTTP/2 Denial of Service with Ember BackendEPSS 0.3%CVE-2026-32630MEDIUMfile-type affected by ZIP Decompression Bomb DoS via [Content_Types].xml entryEPSS 0.3%CVE-2026-58107MEDIUMAuthenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRunEPSS 0.3%CVE-2026-27460MEDIUMTandoor Recipes Affected by Denial of Service via Recipe ImportEPSS 0.3%CVE-2026-55497MEDIUMCloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)EPSS 0.3%CVE-2026-39373MEDIUMJWCrypto: JWE ZIP decompression bombEPSS 0.3%CVE-2026-90555HIGHvLLM before 0.28.0 Denial of Service via Audio HeaderEPSS 0.3%CVE-2026-78594MEDIUMImproper Handling of Highly Compressed Data in APM Server Leading to Persistent Denial of ServiceEPSS 0.3%CVE-2026-53524MEDIUMWeeChat has a Decompression Bomb in Relay WebSocket (DoS)EPSS 0.3%CVE-2026-89321MEDIUMPublishing limits the compressed size of a VSIX (ovsx.publishing.max-content-size, 512 MB by default) but nothing limited how large an entryEPSS 0.3%CVE-2026-25962MEDIUMMarkUs: Zip bomb in config upload enables DoSEPSS 0.3%CVE-2026-42886MEDIUMAudiobookshelf: Memory amplification DoS via oversized compressed details entry in backup uploadEPSS 0.3%CVE-2026-82864HIGHpdfme pdf-lib before 5.5.10 Denial of Service via Decompression BombEPSS 0.2%CVE-2026-40148MEDIUMPraisonAI Affected by Decompression Bomb DoS via Recipe Bundle Extraction Without Size LimitsEPSS 0.2%CVE-2026-10819MEDIUMMattermost Server Denial of Service via Animated GIF Emoji UploadEPSS 0.2%CVE-2026-14298MEDIUMBoards archive import endpoint allows resource exhaustion via zip bomb and file size limit bypass in MattermostEPSS 0.2%CVE-2026-59274MEDIUMUnbounded decompression in UnZipTransformer enables zip-bomb DoSEPSS 0.2%