115 lines
5.0 KiB
JSON
115 lines
5.0 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-126366",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-11-10T21:12:01.228Z",
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"datePublished": "2026-11-12T22:41:38.409Z",
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"dateUpdated": "2026-11-12T22:41:38.409Z"
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},
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"containers": {
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"cna": {
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"title": "msgpack-java JRuby decoder allocates from declared header counts with no cap: 5-byte message forces multi-GiB OOM",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-770",
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"lang": "en",
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"description": "CWE-770: Allocation of Resources Without Limits or Throttling",
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"type": "CWE"
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}
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]
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},
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{
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"descriptions": [
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{
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"cweId": "CWE-1325",
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"lang": "en",
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"description": "CWE-1325: Improperly Controlled Sequential Memory Allocation",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/msgpack/msgpack-ruby/security/advisories/GHSA-73v3-wf97-vpgj",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/msgpack/msgpack-ruby/security/advisories/GHSA-73v3-wf97-vpgj"
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},
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{
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"name": "https://github.com/msgpack/msgpack-ruby/commit/ca0efc1256c687b428c46dd68ce000ff515d53f2",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/msgpack/msgpack-ruby/commit/ca0efc1256c687b428c46dd68ce000ff515d53f2"
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},
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{
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"name": "https://github.com/msgpack/msgpack-ruby/releases/tag/v1.8.6",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/msgpack/msgpack-ruby/releases/tag/v1.8.6"
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},
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{
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"name": "https://github.com/msgpack/msgpack-ruby/releases/tag/v1.8.7",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/msgpack/msgpack-ruby/releases/tag/v1.8.7"
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}
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],
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"affected": [
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{
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"vendor": "msgpack",
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"product": "msgpack-ruby",
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"versions": [
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{
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"version": "< 1.8.7",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-11-12T22:41:38.409Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "MessagePack for Ruby is an implementation of the MessagePack binary serialization format. Prior to 1.8.7, the Java-platform msgpack gem for JRuby allocated arrays and byte buffers directly from attacker-controlled array32, str32, and bin32 declared sizes before confirming that corresponding elements or bytes were available. A short MessagePack header could therefore trigger a very large allocation or sustained heap growth when an application decoded untrusted input through MessagePack.unpack or MessagePack::Unpacker, potentially exhausting the shared JVM heap. map32 and declared counts at or above 2^31 did not use the affected allocation behavior. This issue is fixed in version 1.8.7."
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}
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],
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"source": {
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"advisory": "GHSA-73v3-wf97-vpgj",
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"discovery": "UNKNOWN"
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}
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}
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}
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} |