# Integer overflow in the bundled Brotli C library

Advisory record · `GHSA-5v8v-66v8-mwm7`

- **Identifiers:** `GHSA-5v8v-66v8-mwm7` · `BIT-brotli-2020-8927` · `BIT-dotnet-2020-8927` · `BIT-dotnet-sdk-2020-8927` · `BIT-powershell-2020-8927` · `CVE-2020-36846` · `CVE-2020-8927` · `GO-2025-3726` · `PYSEC-2020-29` · `RUSTSEC-2021-0131` · `RUSTSEC-2021-0132`
- **State:** Confirmed
- **Severity:** CVSS 5.3 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-120](https://cwe.mitre.org/data/definitions/120.html) · [CWE-130](https://cwe.mitre.org/data/definitions/130.html) · [CWE-1395](https://cwe.mitre.org/data/definitions/1395.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md) · [CWE-130](https://agentprime.io/advisories/tag/cwe-130.md) · [CWE-1395](https://agentprime.io/advisories/tag/cwe-1395.md)
- **Published:** 24 May 2022
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 24 May 2022, 17:28 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `compu-brotli-sys` (crates.io): affected `<1.0.9`; fixed in `1.0.9`
- `Microsoft.NETCore.App.Runtime.linux-arm` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.linux-arm64` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.linux-x64` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.osx-x64` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.win-arm` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.win-arm64` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.win-x64` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.win-x86` (NuGet): affected `>=3.0.0, <3.1.23 || >=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `3.1.23`, `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.linux-arm` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.linux-arm64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.linux-x64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.osx-x64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.browser-wasm` (NuGet): affected `>=5.0.0, <5.0.15`; fixed in `5.0.15`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64` (NuGet): affected `>=5.0.0, <5.0.15 || >=6.0.0, <6.0.3`; fixed in `5.0.15`, `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-arm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.browser-wasm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-arm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.browser-wasm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.ios-arm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.ios-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.maccatalyst-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.maccatalyst-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvos-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvossimulator-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvossimulator-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x86.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.browser-wasm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.browser-wasm.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-arm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-arm.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-arm.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-arm.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-arm64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-arm64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-arm64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-x64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-x64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-x64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-x86.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-x86.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.android-x86.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.browser-wasm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.ios-arm` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.ios-arm.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.ios-arm.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.ios-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.maccatalyst-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.maccatalyst-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.osx-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvos-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvossimulator-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvossimulator-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.win-x64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.Mono.win-x86` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `Microsoft.NETCore.App.Runtime.osx-arm64` (NuGet): affected `>=6.0.0, <6.0.3`; fixed in `6.0.3`
- `brotli` (PyPI): affected `<1.0.8`; fixed in `1.0.8`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 5.3 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`, from CNA (Google)

- **CISA KEV:** Not listed.
- **EPSS:** 0.032, the 88th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:37 UTC: First seen by agentprime
- 31 Oct 2026, 14:37 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-5v8v-66v8-mwm7)

## Sources

- [GitHub Advisory Database: GHSA-5v8v-66v8-mwm7](https://github.com/advisories/GHSA-5v8v-66v8-mwm7)
- [OSV: GHSA-5v8v-66v8-mwm7](https://osv.dev/vulnerability/GHSA-5v8v-66v8-mwm7)
- <https://nvd.nist.gov/vuln/detail/CVE-2020-8927>
- <https://github.com/bitemyapp/brotli2-rs/issues/45>
- <https://github.com/github/advisory-database/issues/785>
- <https://github.com/google/brotli/commit/223d80cfbec8fd346e32906c732c8ede21f0cea6>
- <https://www.debian.org/security/2020/dsa-4801>
- <https://usn.ubuntu.com/4568-1>
- <https://rustsec.org/advisories/RUSTSEC-2021-0132.html>
- <https://rustsec.org/advisories/RUSTSEC-2021-0131.html>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-5v8v-66v8-mwm7>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-5v8v-66v8-mwm7/>. Everything for agents: <https://agentprime.io/llms.txt>.