DEBIAN-CVE-2026-45186
In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.
DEBIAN-CVE-2026-45186
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-45186
expat
Source reference: /affected/0/package/name
- Affected versions
- 2.5.0-1
Source reference:
/affected/0/versions2.5.0-1+deb12u1Source reference:
/affected/0/versions2.5.0-1+deb12u2Source reference:
/affected/0/versions2.5.0-1+deb12u3Source reference:
/affected/0/versions - Fixed versions
- 2.5.0-1+deb12u4
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
expat
Source reference: /affected/1/package/name
- Affected versions
- 2.7.1-2
Source reference:
/affected/1/versions2.7.2-1Source reference:
/affected/1/versions2.7.3-1Source reference:
/affected/1/versions2.7.3-2Source reference:
/affected/1/versions2.7.4-1Source reference:
/affected/1/versions2.7.5-1Source reference:
/affected/1/versions2.8.0-1Source reference:
/affected/1/versions2.8.0-2Source reference:
/affected/1/versions2.8.1-1Source reference:
/affected/1/versions - Fixed versions
- 2.8.2-1~deb13u1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
expat
Source reference: /affected/2/package/name
- Affected versions
- 2.7.1-2
Source reference:
/affected/2/versions2.7.2-1Source reference:
/affected/2/versions2.7.3-1Source reference:
/affected/2/versions2.7.3-2Source reference:
/affected/2/versions2.7.4-1Source reference:
/affected/2/versions2.7.5-1Source reference:
/affected/2/versions2.8.0-1Source reference:
/affected/2/versions - Fixed versions
- 2.8.0-2
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.0-1+deb12u4"
}
]
}
],
"package": {
"name": "expat",
"purl": "pkg:deb/debian/expat?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.5.0-1",
"2.5.0-1+deb12u1",
"2.5.0-1+deb12u2",
"2.5.0-1+deb12u3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45186.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.8.2-1~deb13u1"
}
]
}
],
"package": {
"name": "expat",
"purl": "pkg:deb/debian/expat?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.7.1-2",
"2.7.2-1",
"2.7.3-1",
"2.7.3-2",
"2.7.4-1",
"2.7.5-1",
"2.8.0-1",
"2.8.0-2",
"2.8.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45186.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.8.0-2"
}
]
}
],
"package": {
"name": "expat",
"purl": "pkg:deb/debian/expat?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.7.1-2",
"2.7.2-1",
"2.7.3-1",
"2.7.3-2",
"2.7.4-1",
"2.7.5-1",
"2.8.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45186.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56535 · Revision 1
- Added to Heist Feed
- Publisher date