HighFix available
expat, libxmltok — security advisory
A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the environment and library usage.
- Products
- expat, libxmltok
- Affected versions
- 1.2-4, 1.2-4.1, 1.2-4.1~exp1, 1.2-4.2, 2.5.0-1, 2.5.0-1+deb12u1
- Fixed versions
- 2.5.0-1+deb12u2, 2.7.0-1
- CVEs
- CVE-2024-8176
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 23:29 UTC · Revision 1
Source evidence
A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the environment and library usage.
osv:DEBIAN-CVE-2024-8176
expat
Fixed versions: 2.5.0-1+deb12u2
expat
Fixed versions: 2.7.0-1
expat
Fixed versions: 2.7.0-1
libxmltok
Fixed versions: Not specified
Complete source record
{
"id": "b58d0486e8a4ee63835a965b848875798c7abcf49dd05981bf64a670c83ba44c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2024-8176",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2024-8176",
"summary": "A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the environment and library usage.",
"evidence": "osv:DEBIAN-CVE-2024-8176",
"products": [
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"evidence": "/affected/0/ranges"
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"affected_versions": [
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"ecosystem": "Debian:12"
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"versions": [
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"package": {
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{
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"package": {
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"purl": "pkg:deb/debian/expat?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-8176.json"
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{
"ranges": [
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"package": {
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"versions": [
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],
"modified": "2026-10-23T17:47:45.154411159Z",
"provider": "osv",
"upstream": [
"CVE-2024-8176"
],
"references": [
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]
},
"related_cves": [
{
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"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 418709,
"published_at": "2025-03-14T09:15:14.157+00:00"
}