MediumFix available
curl — security advisory
curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.
- Products
- curl
- Affected versions
- Not specified
- Fixed versions
- 7.79.1-r2, 7.80.0-r2, 7.83.1-r2, 7.84.0-r0
- CVEs
- CVE-2022-32206
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:12 UTC · Revision 1
Source evidence
curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.
osv:ALPINE-CVE-2022-32206
curl
Fixed versions: 7.79.1-r2
curl
Fixed versions: 7.79.1-r2
curl
Fixed versions: 7.80.0-r2
curl
Fixed versions: 7.83.1-r2
curl
Fixed versions: 7.84.0-r0
curl
Fixed versions: 7.84.0-r0
curl
Fixed versions: 7.84.0-r0
curl
Fixed versions: 7.84.0-r0
curl
Fixed versions: 7.84.0-r0
curl
Fixed versions: 7.84.0-r0
curl
Fixed versions: 7.84.0-r0
curl
Fixed versions: 7.84.0-r0
Complete source record
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"url": "https://osv.dev/vulnerability/ALPINE-CVE-2022-32206",
"method": "structured",
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"title": "ALPINE-CVE-2022-32206",
"summary": "curl < 7.84.0 supports \"chained\" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable \"links\" in this \"decompression chain\" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a \"malloc bomb\", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.",
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"severity": "medium",
"structured": {
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"aliases": [
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],
"metrics": [
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"type": "CVSS_V3",
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}
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],
"modified": "2026-10-15T07:17:54.220400615Z",
"provider": "osv",
"upstream": [
"CVE-2022-32206"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2022-32206"
]
},
"related_cves": [
{
"value": "CVE-2022-32206",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 321881,
"published_at": "2022-07-07T13:15:08.34+00:00"
}