286 lines
12 KiB
JSON
286 lines
12 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-47066",
|
|
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "EEF",
|
|
"dateReserved": "2026-05-18T17:28:08.321Z",
|
|
"datePublished": "2026-05-25T14:00:39.707Z",
|
|
"dateUpdated": "2026-05-27T15:40:41.946Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"affected": [
|
|
{
|
|
"collectionURL": "https://repo.hex.pm",
|
|
"cpes": [
|
|
"cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"
|
|
],
|
|
"defaultStatus": "unaffected",
|
|
"modules": [
|
|
"hackney_altsvc"
|
|
],
|
|
"packageName": "hackney",
|
|
"packageURL": "pkg:hex/hackney",
|
|
"product": "hackney",
|
|
"programFiles": [
|
|
"src/hackney_altsvc.erl"
|
|
],
|
|
"programRoutines": [
|
|
{
|
|
"name": "hackney_altsvc:parse_entries/2"
|
|
},
|
|
{
|
|
"name": "hackney_altsvc:parse_entry/1"
|
|
},
|
|
{
|
|
"name": "hackney_altsvc:parse_protocol/1"
|
|
},
|
|
{
|
|
"name": "hackney_altsvc:parse_token/2"
|
|
},
|
|
{
|
|
"name": "hackney_altsvc:skip_comma/1"
|
|
}
|
|
],
|
|
"repo": "https://github.com/benoitc/hackney",
|
|
"vendor": "benoitc",
|
|
"versions": [
|
|
{
|
|
"lessThan": "4.0.1",
|
|
"status": "affected",
|
|
"version": "2.0.0-beta.1",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"collectionURL": "https://github.com",
|
|
"cpes": [
|
|
"cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"
|
|
],
|
|
"defaultStatus": "unaffected",
|
|
"modules": [
|
|
"hackney_altsvc"
|
|
],
|
|
"packageName": "benoitc/hackney",
|
|
"packageURL": "pkg:github/benoitc/hackney",
|
|
"product": "hackney",
|
|
"programFiles": [
|
|
"src/hackney_altsvc.erl"
|
|
],
|
|
"programRoutines": [
|
|
{
|
|
"name": "hackney_altsvc:parse_entries/2"
|
|
},
|
|
{
|
|
"name": "hackney_altsvc:parse_entry/1"
|
|
},
|
|
{
|
|
"name": "hackney_altsvc:parse_protocol/1"
|
|
},
|
|
{
|
|
"name": "hackney_altsvc:parse_token/2"
|
|
},
|
|
{
|
|
"name": "hackney_altsvc:skip_comma/1"
|
|
}
|
|
],
|
|
"repo": "https://github.com/benoitc/hackney",
|
|
"vendor": "benoitc",
|
|
"versions": [
|
|
{
|
|
"lessThan": "e548aba1f97ffa3f4750da7b772998fb78c01894",
|
|
"status": "affected",
|
|
"version": "408e5fe20302226ea8c74dde2bcbd452d712b5b2",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"cpeMatch": [
|
|
{
|
|
"criteria": "cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*",
|
|
"versionEndExcluding": "4.0.1",
|
|
"versionStartIncluding": "2.0.0-beta.1",
|
|
"vulnerable": true
|
|
}
|
|
],
|
|
"negate": false,
|
|
"operator": "AND"
|
|
}
|
|
],
|
|
"operator": "AND"
|
|
}
|
|
],
|
|
"credits": [
|
|
{
|
|
"lang": "en",
|
|
"type": "finder",
|
|
"value": "Peter Ullrich"
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"type": "remediation developer",
|
|
"value": "Benoit Chesneau"
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"type": "analyst",
|
|
"value": "Jonatan Männchen / EEF"
|
|
}
|
|
],
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"supportingMedia": [
|
|
{
|
|
"base64": false,
|
|
"type": "text/html",
|
|
"value": "Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in benoitc hackney allows Excessive Allocation.<p>The Alt-Svc response header parser in <tt>src/hackney_altsvc.erl</tt> does not guarantee forward progress. When <tt>parse_token/2</tt> receives a non-token, non-whitespace, non-comma byte (e.g. <tt>!</tt>, <tt>@</tt>, <tt>=</tt>, <tt>;</tt>), it returns the input unchanged. <tt>skip_comma/1</tt> also returns the buffer unchanged when the first byte is not a comma. <tt>parse_entries/2</tt> then recurses with identical data, creating a tight infinite tail-recursive loop that pins a scheduler at 100% CPU. The calling process never returns.</p><p>The entry point <tt>parse_and_cache/3</tt> is called synchronously in the connection process on every HTTP response. A single-byte <tt>Alt-Svc: !</tt> response header is sufficient to trigger the hang; the header is fully controlled by any HTTP origin the client connects to.</p><p>This issue affects hackney: from 2.0.0-beta.1 before 4.0.1.</p>"
|
|
}
|
|
],
|
|
"value": "Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in benoitc hackney allows Excessive Allocation. The Alt-Svc response header parser in src/hackney_altsvc.erl does not guarantee forward progress. When parse_token/2 receives a non-token, non-whitespace, non-comma byte (e.g. !, @, =, ;), it returns the input unchanged. skip_comma/1 also returns the buffer unchanged when the first byte is not a comma. parse_entries/2 then recurses with identical data, creating a tight infinite tail-recursive loop that pins a scheduler at 100% CPU. The calling process never returns.\n\nThe entry point parse_and_cache/3 is called synchronously in the connection process on every HTTP response. A single-byte Alt-Svc: ! response header is sufficient to trigger the hang; the header is fully controlled by any HTTP origin the client connects to.\n\nThis issue affects hackney: from 2.0.0-beta.1 before 4.0.1."
|
|
}
|
|
],
|
|
"impacts": [
|
|
{
|
|
"capecId": "CAPEC-130",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "CAPEC-130 Excessive Allocation"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV4_0": {
|
|
"attackComplexity": "LOW",
|
|
"attackRequirements": "NONE",
|
|
"attackVector": "NETWORK",
|
|
"baseScore": 8.7,
|
|
"baseSeverity": "HIGH",
|
|
"privilegesRequired": "NONE",
|
|
"subAvailabilityImpact": "NONE",
|
|
"subConfidentialityImpact": "NONE",
|
|
"subIntegrityImpact": "NONE",
|
|
"userInteraction": "NONE",
|
|
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
|
|
"version": "4.0",
|
|
"vulnAvailabilityImpact": "HIGH",
|
|
"vulnConfidentialityImpact": "NONE",
|
|
"vulnIntegrityImpact": "NONE"
|
|
},
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-835",
|
|
"description": "CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')",
|
|
"lang": "en",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
|
|
"shortName": "EEF",
|
|
"dateUpdated": "2026-05-27T15:40:41.946Z"
|
|
},
|
|
"references": [
|
|
{
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"related"
|
|
],
|
|
"url": "https://github.com/benoitc/hackney/security/advisories/GHSA-6cp8-v795-jr2j"
|
|
},
|
|
{
|
|
"tags": [
|
|
"related"
|
|
],
|
|
"url": "https://cna.erlef.org/cves/CVE-2026-47066.html"
|
|
},
|
|
{
|
|
"tags": [
|
|
"related"
|
|
],
|
|
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-47066"
|
|
},
|
|
{
|
|
"tags": [
|
|
"patch"
|
|
],
|
|
"url": "https://github.com/benoitc/hackney/commit/e548aba1f97ffa3f4750da7b772998fb78c01894"
|
|
}
|
|
],
|
|
"source": {
|
|
"discovery": "EXTERNAL"
|
|
},
|
|
"title": "Infinite loop in Alt-Svc header parser in hackney",
|
|
"x_generator": {
|
|
"engine": "cvelib 1.8.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/benoitc/hackney/security/advisories/GHSA-6cp8-v795-jr2j",
|
|
"tags": [
|
|
"exploit"
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-05-26T15:50:47.725364Z",
|
|
"id": "CVE-2026-47066",
|
|
"options": [
|
|
{
|
|
"Exploitation": "poc"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-05-26T15:50:51.330Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |