184 lines
7.7 KiB
JSON
184 lines
7.7 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-54556",
|
|
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "GitHub_M",
|
|
"dateReserved": "2026-06-15T19:04:14.456Z",
|
|
"datePublished": "2026-08-26T14:10:22.349Z",
|
|
"dateUpdated": "2026-08-29T02:38:44.725Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"title": "Http4s: HTTP/2 Denial of Service with Ember Backend",
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-409",
|
|
"lang": "en",
|
|
"description": "CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV4_0": {
|
|
"attackVector": "NETWORK",
|
|
"attackComplexity": "LOW",
|
|
"attackRequirements": "PRESENT",
|
|
"privilegesRequired": "NONE",
|
|
"userInteraction": "NONE",
|
|
"vulnConfidentialityImpact": "NONE",
|
|
"vulnIntegrityImpact": "NONE",
|
|
"vulnAvailabilityImpact": "HIGH",
|
|
"subConfidentialityImpact": "NONE",
|
|
"subIntegrityImpact": "NONE",
|
|
"subAvailabilityImpact": "NONE",
|
|
"baseScore": 8.2,
|
|
"baseSeverity": "HIGH",
|
|
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
|
|
"version": "4.0"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"name": "https://github.com/http4s/http4s/security/advisories/GHSA-vmm3-xgcx-67hm",
|
|
"tags": [
|
|
"x_refsource_CONFIRM"
|
|
],
|
|
"url": "https://github.com/http4s/http4s/security/advisories/GHSA-vmm3-xgcx-67hm"
|
|
},
|
|
{
|
|
"name": "https://github.com/http4s/http4s/commit/6e8eccd64a6a74ab4811897881e95e0e1b3a818e",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/http4s/http4s/commit/6e8eccd64a6a74ab4811897881e95e0e1b3a818e"
|
|
},
|
|
{
|
|
"name": "https://github.com/http4s/http4s/releases/tag/v0.23.35",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/http4s/http4s/releases/tag/v0.23.35"
|
|
},
|
|
{
|
|
"name": "https://github.com/http4s/http4s/releases/tag/v1.0.0-M47",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/http4s/http4s/releases/tag/v1.0.0-M47"
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "http4s",
|
|
"product": "http4s",
|
|
"versions": [
|
|
{
|
|
"version": "< 0.23.35",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": ">= 1.0.0-M1, < 1.0.0-M46",
|
|
"status": "affected"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"vendor": "org.http4s",
|
|
"product": "http4s-ember-core_2.12",
|
|
"versions": [
|
|
{
|
|
"version": "< 0.23.35",
|
|
"status": "affected"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"vendor": "org.http4s",
|
|
"product": "http4s-ember-core_2.13",
|
|
"versions": [
|
|
{
|
|
"version": ">= 1.0.0-M1, < 1.0.0-M46",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "< 0.23.35",
|
|
"status": "affected"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"vendor": "org.http4s",
|
|
"product": "http4s-ember-core_3",
|
|
"versions": [
|
|
{
|
|
"version": ">= 1.0.0-M1, < 1.0.0-M46",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "< 0.23.35",
|
|
"status": "affected"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"shortName": "GitHub_M",
|
|
"dateUpdated": "2026-08-26T14:10:22.349Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, an unauthenticated HTTP/2 peer can cause an out-of-memory denial of service in the Ember backend with HTTP/2 enabled. The Hpack wrapper in ember-core/shared/src/main/scala/org/http4s/ember/core/h2/Hpack.scala concatenates HEADERS and CONTINUATION frame fragments and decodes them into a single List, but maxHeaderSize accounting does not include indexed headers or HPACK per-header overhead. A small compressed header block can therefore expand into a much larger decoded representation that remains in memory for processing. Servers exposed to untrusted HTTP/2 traffic and clients directed to an untrusted HTTP/2 server are affected, and concurrent malicious connections can exhaust the process heap. This issue is fixed in versions 0.23.35 and 1.0.0-M47."
|
|
}
|
|
],
|
|
"source": {
|
|
"advisory": "GHSA-vmm3-xgcx-67hm",
|
|
"discovery": "UNKNOWN"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-08-29T02:38:20.242464Z",
|
|
"id": "CVE-2026-54556",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"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": "2026-08-29T02:38:44.725Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |