150 lines
7.0 KiB
JSON
150 lines
7.0 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-2026-92707",
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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": "2026-09-16T16:22:31.542Z",
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"datePublished": "2026-10-15T18:35:49.074Z",
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"dateUpdated": "2026-10-15T20:12:15.468Z"
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},
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"containers": {
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"cna": {
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"title": "MessagePack: Nested arrays can blow past buffer length limits",
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"problemTypes": [
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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": "LOW",
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"baseScore": 5.3,
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"baseSeverity": "MEDIUM",
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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:L",
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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/MessagePack-CSharp/MessagePack-CSharp/security/advisories/GHSA-qhrr-8q5h-9q3h",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/security/advisories/GHSA-qhrr-8q5h-9q3h"
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},
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{
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"name": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/commit/7fd78bbf3476e03beae8b0f7a521125525a8a64a",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/commit/7fd78bbf3476e03beae8b0f7a521125525a8a64a"
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},
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{
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"name": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/commit/95b63fca4f7097d3cac12d1a95286af4b4bbf02c",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/commit/95b63fca4f7097d3cac12d1a95286af4b4bbf02c"
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},
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{
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"name": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases/tag/v2.5.303",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases/tag/v2.5.303"
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},
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{
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"name": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases/tag/v3.1.9",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases/tag/v3.1.9"
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}
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],
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"affected": [
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{
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"vendor": "MessagePack-CSharp",
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"product": "MessagePack-CSharp",
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"versions": [
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{
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"version": "< 2.5.303",
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"status": "affected"
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},
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{
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"version": ">= 3.0.0, < 3.1.9",
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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": "2026-10-15T18:35:49.074Z"
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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 C# is a MessagePack serializer for C#. Prior to 2.5.303 and 3.1.9, deserializing attacker-controlled MessagePack data as System.Object through PrimitiveObjectFormatter can cause excessive memory allocation. The formatter allocates an object[] from each declared array length before the configured object-graph depth limit rejects the input, while nested array headers can reuse the same trailing unread bytes to satisfy per-header length validation. A comparatively small payload can therefore keep many large arrays alive at once. When an attacker can submit such data repeatedly, the allocations can cause severe managed-heap pressure, excessive garbage collection, process termination, or loss of service. Exposure requires an application to deserialize untrusted data through the affected formatter path and permit repeated attacker-controlled submissions, such as a reachable ASP.NET Core SignalR hub method with an object parameter and AddMessagePackProtocol() enabled. This issue is fixed in versions 2.5.303 and 3.1.9."
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}
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],
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"source": {
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"advisory": "GHSA-qhrr-8q5h-9q3h",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-10-15T20:10:28.719217Z",
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"id": "CVE-2026-92707",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-15T20:12:15.468Z"
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}
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}
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]
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}
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} |