MediumFix available
glib2.0 — security advisory
A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.
- Products
- glib2.0
- Affected versions
- Not specified
- Fixed versions
- 2.64.0-1
- CVEs
- CVE-2021-3800
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:34 UTC · Revision 1
Source evidence
A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.
osv:DEBIAN-CVE-2021-3800
glib2.0
Fixed versions: 2.64.0-1
glib2.0
Fixed versions: 2.64.0-1
glib2.0
Fixed versions: 2.64.0-1
Complete source record
{
"id": "e9cb2d594e62c8cbec95de38c91eb0ba5a1b114416619bc5ce5e5400a98727d8",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-3800",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-3800",
"summary": "A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.",
"evidence": "osv:DEBIAN-CVE-2021-3800",
"products": [
{
"name": {
"value": "glib2.0",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.64.0-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "glib2.0",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.64.0-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "glib2.0",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.64.0-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2021-3800",
"aliases": [
"DEBIAN-CVE-2021-3800"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.64.0-1"
}
]
}
],
"package": {
"name": "glib2.0",
"purl": "pkg:deb/debian/glib2.0?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3800.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.64.0-1"
}
]
}
],
"package": {
"name": "glib2.0",
"purl": "pkg:deb/debian/glib2.0?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3800.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.64.0-1"
}
]
}
],
"package": {
"name": "glib2.0",
"purl": "pkg:deb/debian/glib2.0?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3800.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:03:27.108304624Z",
"provider": "osv",
"upstream": [
"CVE-2021-3800"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-3800"
]
},
"related_cves": [
{
"value": "CVE-2021-3800",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 421555,
"published_at": "2022-08-23T16:15:09.98+00:00"
}