Medium
Security advisory
A buffer overflow exists in the Brotli library versions prior to 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 Brotli library to 1.0.8 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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-36846, CVE-2020-8927
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:46 UTC · Revision 1
Source evidence
A buffer overflow exists in the Brotli library versions prior to 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 Brotli library to 1.0.8 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.
osv:CVE-2020-8927
Complete source record
{
"id": "1df8bbffa7bf0d6aea52d562100cc3794c7e72584ba895a9d7e2f0c5e288b8cb",
"url": "https://osv.dev/vulnerability/CVE-2020-8927",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-8927",
"summary": "A buffer overflow exists in the Brotli library versions prior to 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 Brotli library to 1.0.8 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.",
"evidence": "osv:CVE-2020-8927",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-8927",
"aliases": [
"BIT-brotli-2020-8927",
"BIT-dotnet-2020-8927",
"BIT-dotnet-sdk-2020-8927",
"BIT-powershell-2020-8927",
"CVE-2020-36846",
"CVE-2020-8927",
"GHSA-5v8v-66v8-mwm7",
"GO-2025-3726",
"PYSEC-2020-29",
"RUSTSEC-2021-0131",
"RUSTSEC-2021-0132"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
}
],
"affected": [
{
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"type": "GIT",
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{
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{
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{
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}
],
"database_specific": {
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},
{
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}
],
"source": "CPE_RANGE"
},
{
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},
{
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}
],
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}
}
],
"versions": [
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"v6.0.0-rc.2",
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"v6.0.0-rc.1",
"v5.0.10",
"v3.1.19",
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"v2.1.29",
"v6.0.0-preview.7",
"v5.0.9",
"v3.1.18",
"v6.0.0-preview.6",
"v5.0.8",
"v3.1.17",
"v6.0.0-preview.5",
"v5.0.7",
"v3.1.16",
"v6.0.0-preview.4",
"v5.0.6",
"v3.1.15",
"v3.1.14",
"v6.0.0-preview.3",
"v5.0.5",
"v6.0.0-preview.2",
"v5.0.4",
"v3.1.13",
"v6.0.0-preview.1",
"v5.0.3",
"v3.1.12",
"v2.1.25",
"v5.0.2",
"v3.1.11",
"v2.1.24",
"v5.0.1",
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],
"database_specific": {
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}
},
{
"ranges": [
{
"repo": "https://github.com/google/brotli",
"type": "GIT",
"events": [
{
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},
{
"fixed": "db361a0bb901d6a71c7cbf1370d97b3703482e3b"
},
{
"fixed": "e61745a6b7add50d380cfd7d3883dd6c62fc2c71"
}
],
"database_specific": {
"extracted_events": [
{
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"range": [
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{
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],
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{
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],
"source": "REFERENCES_TAG",
"original_tag": "v1.0.9"
}
]
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}
],
"versions": [
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"v1.0.6",
"v1.0.5",
"v1.0.4",
"v1.0.3",
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"v1.0.1",
"v1.0.0",
"v0.6.0",
"v0.4.0",
"v0.3.0",
"v0.2.0",
"v0.1.0"
],
"database_specific": {
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}
},
{
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"type": "GIT",
"events": [
{
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},
{
"fixed": "3269c95a72af9a3a161884dbae99eae0352b3e7d"
},
{
"introduced": "fa01333bfeef5dd7769143e2b4ec7ffdb70c62c8"
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{
"fixed": "dc703cb4aa619e31f2f48f2b9bf613e9aa6cff76"
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{
"introduced": "bec5c36d9da67bfcf5b88834f03b326c89f100c5"
},
{
"fixed": "2bbf08166ff49469988420af883407e1dd1ef4ed"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*",
"range": [
{
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},
{
"fixed": "7.0.9"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*",
"range": [
{
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},
{
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}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.2"
},
{
"fixed": "7.2.2"
}
],
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}
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}
}
],
"versions": [
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"v7.1.5",
"v7.2.1",
"v7.2.0",
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"v7.0.7",
"v7.0.6",
"v7.1.3",
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"v7.1.0",
"v7.0.3",
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],
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}
],
"modified": "2026-10-24T10:50:07.100838430Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/",
"https://github.com/google/brotli/releases/tag/v1.0.9",
"https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html",
"https://usn.ubuntu.com/4568-1/",
"https://www.debian.org/security/2020/dsa-4801"
],
"provider_metadata": {
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{
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{
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{
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{
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{
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},
{
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},
{
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{
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{
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{
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{
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{
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{
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},
{
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},
{
"cpes": [
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"vendor_product": "opensuse:leap",
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{
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{
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}
],
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}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-36846",
"evidence": "/aliases"
},
{
"value": "CVE-2020-8927",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 441971,
"published_at": "2020-09-15T10:15:12.887+00:00"
}