{"id":"CVE-2020-36846","aliases":["BIT-brotli-2020-8927","BIT-dotnet-2020-8927","BIT-dotnet-sdk-2020-8927","BIT-powershell-2020-8927","CVE-2020-8927","GHSA-5v8v-66v8-mwm7","GO-2025-3726","PYSEC-2020-29","RUSTSEC-2021-0131","RUSTSEC-2021-0132"],"url":"https://o3.security/vulnerability/CVE-2020-36846","summary":"Integer overflow in the bundled Brotli C library","details":"A buffer overflow, as described in CVE-2020-8927, exists in the embedded Brotli library.  Versions of IO::Compress::Brotli prior to 0.007 included a version of the brotli library prior to version 1.0.8, where an attacker controlling the input length of a \"one-shot\" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your IO::Compress::Brotli module to 0.007 or later. If one cannot update, we recommend to use the \"streaming\" API as opposed to the \"one-shot\" API, and impose chunk size limits.","published":"2025-05-30T01:15:20.950Z","modified":"2026-07-08T22:14:44.192288Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"compu-brotli-sys","fixedVersion":"1.0.9"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-arm","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-arm64","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-musl-arm64","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-x64","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.osx-x64","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-arm","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-arm64","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-x64","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-x86","fixedVersion":"3.1.23"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.linux-arm","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.linux-arm64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.linux-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.Mono.osx-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.browser-wasm","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-arm","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-arm64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-musl-arm","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-musl-arm64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-musl-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.osx-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-arm","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-arm64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-x64","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-x86","fixedVersion":"5.0.15"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-arm","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-arm64","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-x64","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-x86","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.browser-wasm","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-arm","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-arm64","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-x64","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-x86","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.browser-wasm","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.ios-arm","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.ios-arm64","fixedVersion":"6.0.3"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-arm64","fixedVersion":"6.0.3"},{"ecosystem":"Nu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(EPSS)"],"lastVerified":"2026-07-08T22:14:44.192288Z"}}