Medium
glib2.0 — security advisory
A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.
- Products
- glib2.0
- Affected versions
- 2.38.0-1ubuntu1, 2.38.1-1, 2.39.1-0ubuntu1, 2.39.1-0ubuntu2, 2.39.1-0ubuntu3, 2.39.2-0ubuntu1, 2.39.2-0ubuntu2, 2.39.3-0ubuntu4, 2.39.4-0ubuntu1, 2.39.90-0ubuntu1, 2.39.91-0ubuntu2, 2.39.91-0ubuntu3, 2.39.92-2, 2.40.0-1, 2.40.0-1ubuntu1, 2.40.0-2, 2.40.2-0ubuntu1, 2.40.2-0ubuntu1.1, 2.40.2-0ubuntu1.1+esm1, 2.40.2-0ubuntu1.1+esm2, 2.40.2-0ubuntu1.1+esm3, 2.40.2-0ubuntu1.1+esm4, 2.40.2-0ubuntu1.1+esm6, 2.40.2-0ubuntu1.1+esm7, 2.40.2-0ubuntu1.1+esm8, 2.46.1-1, 2.46.1-2, 2.47.1-1, 2.47.3-3, 2.47.4-1, 2.47.5-1, 2.47.6-1, 2.48.0-1ubuntu3, 2.48.0-1ubuntu4, 2.48.1-1~ubuntu16.04.1, 2.48.2-0ubuntu1, 2.48.2-0ubuntu3, 2.48.2-0ubuntu4, 2.48.2-0ubuntu4.1, 2.48.2-0ubuntu4.2, 2.48.2-0ubuntu4.3, 2.48.2-0ubuntu4.4, 2.48.2-0ubuntu4.5, 2.48.2-0ubuntu4.6, 2.48.2-0ubuntu4.7, 2.48.2-0ubuntu4.8, 2.48.2-0ubuntu4.8+esm1, 2.48.2-0ubuntu4.8+esm3, 2.48.2-0ubuntu4.8+esm4, 2.48.2-0ubuntu4.8+esm5, 2.48.2-0ubuntu4.8+esm6, 2.54.1-1ubuntu1, 2.55.2-2ubuntu1, 2.56.0-2ubuntu1, 2.56.0-4ubuntu1, 2.56.1-2ubuntu1, 2.56.2-0ubuntu0.18.04.1, 2.56.2-0ubuntu0.18.04.2, 2.56.3-0ubuntu0.18.04.1, 2.56.4-0ubuntu0.18.04.2, 2.56.4-0ubuntu0.18.04.3, 2.56.4-0ubuntu0.18.04.4, 2.56.4-0ubuntu0.18.04.5, 2.56.4-0ubuntu0.18.04.6, 2.56.4-0ubuntu0.18.04.7, 2.56.4-0ubuntu0.18.04.8, 2.56.4-0ubuntu0.18.04.9, 2.56.4-0ubuntu0.18.04.9+esm3, 2.56.4-0ubuntu0.18.04.9+esm4, 2.56.4-0ubuntu0.18.04.9+esm5, 2.56.4-0ubuntu0.18.04.9+esm6, 2.62.1-1, 2.63.1-2, 2.63.1-2ubuntu1, 2.63.3-1, 2.63.3-3, 2.63.5-2, 2.64.0-1, 2.64.1-1, 2.64.2-1~fakesync1, 2.64.3-1~ubuntu20.04.1, 2.64.6-1~ubuntu20.04.1, 2.64.6-1~ubuntu20.04.2, 2.64.6-1~ubuntu20.04.3, 2.64.6-1~ubuntu20.04.4, 2.64.6-1~ubuntu20.04.6, 2.64.6-1~ubuntu20.04.7, 2.64.6-1~ubuntu20.04.8, 2.64.6-1~ubuntu20.04.9, 2.64.6-1~ubuntu20.04.9+esm1, 2.64.6-1~ubuntu20.04.9+esm2, 2.68.4-1ubuntu1, 2.70.1-1, 2.70.2-1, 2.71.0-2, 2.71.1-1, 2.71.2-1, 2.71.3-1, 2.72.0-1, 2.72.1-1, 2.72.4-0ubuntu1, 2.72.4-0ubuntu2, 2.72.4-0ubuntu2.10, 2.72.4-0ubuntu2.2, 2.72.4-0ubuntu2.3, 2.72.4-0ubuntu2.4, 2.72.4-0ubuntu2.5, 2.72.4-0ubuntu2.6, 2.72.4-0ubuntu2.7, 2.72.4-0ubuntu2.8, 2.72.4-0ubuntu2.9, 2.78.0-2, 2.78.1-4, 2.78.3-1, 2.78.3-2, 2.79.1-1, 2.79.2-1~ubuntu1, 2.79.3-3ubuntu5, 2.80.0-6ubuntu1, 2.80.0-6ubuntu3, 2.80.0-6ubuntu3.1, 2.80.0-6ubuntu3.10, 2.80.0-6ubuntu3.2, 2.80.0-6ubuntu3.4, 2.80.0-6ubuntu3.5, 2.80.0-6ubuntu3.6, 2.80.0-6ubuntu3.7, 2.80.0-6ubuntu3.8, 2.80.0-6ubuntu3.9, 2.86.0-2, 2.86.1-1, 2.86.1-2, 2.86.2-1, 2.86.3-1, 2.86.3-4, 2.87.2-2, 2.87.2-3, 2.87.3-1, 2.88.0-1, 2.88.0-1ubuntu0.1, 2.88.1-2, 2.89.2-1, 2.89.3-3, 2.89.3-4, 2.90.0-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-86469
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 13:48 UTC · Revision 1
Source evidence
A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.
osv:UBUNTU-CVE-2026-86469
glib2.0
Fixed versions: Not specified
glib2.0
Fixed versions: Not specified
glib2.0
Fixed versions: Not specified
glib2.0
Fixed versions: Not specified
glib2.0
Fixed versions: Not specified
glib2.0
Fixed versions: Not specified
glib2.0
Fixed versions: Not specified
glib2.0
Fixed versions: Not specified
Complete source record
{
"id": "07fe903ade3e7f37917fad0b6d4faab7dd5ff8c7a6d70662ba1449122402f453",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-86469",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-86469",
"summary": "A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.",
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],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-86469",
"aliases": [
"UBUNTU-CVE-2026-86469"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L"
},
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"modified": "2026-10-21T10:16:14.759059918Z",
"provider": "osv",
"upstream": [
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],
"references": [
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]
},
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{
"value": "CVE-2026-86469",
"evidence": "/upstream"
}
],
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"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 392104,
"published_at": "2026-09-07T16:17:00+00:00"
}