MediumFix available
zstd — security advisory
Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.
- Products
- zstd
- Affected versions
- Not specified
- Fixed versions
- 1.4.9-r0
- CVEs
- CVE-2021-24032
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:03 UTC · Revision 1
Source evidence
Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.
osv:ALPINE-CVE-2021-24032
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
zstd
Fixed versions: 1.4.9-r0
Complete source record
{
"id": "452d549d7aaaa6f3a850ef83fd0dcb8aed92a9ba052422f14269283c7ddc2277",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2021-24032",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2021-24032",
"summary": "Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.",
"evidence": "osv:ALPINE-CVE-2021-24032",
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{
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{
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{
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"fixed_versions": [
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],
"affected_versions": []
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],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2021-24032",
"aliases": [
"ALPINE-CVE-2021-24032"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
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"affected": [
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"ecosystem": "Alpine:v3.11"
},
"database_specific": {
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},
"ecosystem_specific": {}
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{
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"package": {
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"ecosystem": "Alpine:v3.12"
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"database_specific": {
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{
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],
"package": {
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"purl": "pkg:apk/alpine/zstd?arch=source",
"ecosystem": "Alpine:v3.13"
},
"database_specific": {
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{
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],
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"purl": "pkg:apk/alpine/zstd?arch=source",
"ecosystem": "Alpine:v3.15"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-24032.json"
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"ecosystem": "Alpine:v3.16"
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],
"package": {
"name": "zstd",
"purl": "pkg:apk/alpine/zstd?arch=source",
"ecosystem": "Alpine:v3.17"
},
"database_specific": {
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],
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"ecosystem": "Alpine:v3.21"
},
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],
"package": {
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"ecosystem": "Alpine:v3.22"
},
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],
"package": {
"name": "zstd",
"purl": "pkg:apk/alpine/zstd?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
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},
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{
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]
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],
"package": {
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"ecosystem": "Alpine:v3.24"
},
"database_specific": {
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},
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}
],
"modified": "2026-10-23T17:17:56.158792505Z",
"provider": "osv",
"upstream": [
"CVE-2021-24032"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2021-24032"
]
},
"related_cves": [
{
"value": "CVE-2021-24032",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415334,
"published_at": "2021-03-04T21:15:12.963+00:00"
}