High
libexpat 2.7.2 through 2.8.5 Integer Overflow in expat_realloc
libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to applications parsing with vulnerable libexpat can cause heap buffer overflow, memory corruption, or denial of service.
Announced Source revision 1
Original source ↗CVE-2026-102633
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: cve:CVE-2026-102633
libexpat
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "libexpat",
"product": "libexpat",
"versions": [
{
"status": "affected",
"version": "2.7.2",
"versionType": "semver",
"lessThanOrEqual": "2.8.5"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-102633
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #3846 · Revision 1
- Added to Heist Feed
- Publisher date