Important: expat security update
Expat is a C library for parsing XML documents. Security Fix(es): * expat: Expat: Denial of Service via quadratic complexity in attribute processing (CVE-2026-66046) * expat: Expat: XML Injection via Malformed UTF-16 Input (CVE-2026-93990) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
ALSA-2026:72448
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:ALSA-2026:72448
expat
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.5.0-4.el8_10
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
expat-devel
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.5.0-4.el8_10
Source reference:
/affected/1/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": "2.5.0-4.el8_10"
}
]
}
],
"package": {
"name": "expat",
"purl": "pkg:rpm/almalinux/expat",
"ecosystem": "AlmaLinux:8"
},
"database_specific": {
"source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:72448.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.0-4.el8_10"
}
]
}
],
"package": {
"name": "expat-devel",
"purl": "pkg:rpm/almalinux/expat-devel",
"ecosystem": "AlmaLinux:8"
},
"database_specific": {
"source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:72448.json"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #23432 · Revision 1
- Added to Heist Feed
- Publisher date