HighFix available
expat — security advisory
In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.
- Products
- expat
- Affected versions
- Not specified
- Fixed versions
- 2.2.10-r8, 2.5.0-r0
- CVEs
- CVE-2022-43680
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:19 UTC · Revision 1
Source evidence
In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.
osv:ALPINE-CVE-2022-43680
expat
Fixed versions: 2.2.10-r8
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
expat
Fixed versions: 2.5.0-r0
Complete source record
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"url": "https://osv.dev/vulnerability/ALPINE-CVE-2022-43680",
"method": "structured",
"payload": {
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"title": "ALPINE-CVE-2022-43680",
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"evidence": "osv:ALPINE-CVE-2022-43680",
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"aliases": [
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"metrics": [
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"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
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"affected": [
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{
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],
"modified": "2026-10-15T07:17:54.272544582Z",
"provider": "osv",
"upstream": [
"CVE-2022-43680"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2022-43680"
]
},
"related_cves": [
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"value": "CVE-2022-43680",
"evidence": "/upstream"
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],
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"source_id": "core-osv",
"document_id": 322041,
"published_at": "2022-10-24T14:15:53.323+00:00"
}