195 lines
8.2 KiB
JSON
195 lines
8.2 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-2026-53587",
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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": "2026-06-09T19:11:53.484Z",
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"datePublished": "2026-08-20T18:36:43.055Z",
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"dateUpdated": "2026-08-20T19:18:33.821Z"
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},
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"containers": {
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"cna": {
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"title": "libgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pkt.c:set_data",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-20",
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"lang": "en",
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"description": "CWE-20: Improper Input Validation",
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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-125",
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"lang": "en",
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"description": "CWE-125: Out-of-bounds Read",
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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-126",
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"lang": "en",
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"description": "CWE-126: Buffer Over-read",
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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-1284",
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"lang": "en",
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"description": "CWE-1284: Improper Validation of Specified Quantity in Input",
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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/libgit2/libgit2/security/advisories/GHSA-pm24-4jhq-3xvm",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-pm24-4jhq-3xvm"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/2c0ce8c0132ac38ab0db28239462a671e2e5440e",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/2c0ce8c0132ac38ab0db28239462a671e2e5440e"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/affda60c10fcef16723451c0d7dc71b71dc20ad3",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/affda60c10fcef16723451c0d7dc71b71dc20ad3"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/d7a9fb87f504434e9f45228678953c4fa56e7640",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/d7a9fb87f504434e9f45228678953c4fa56e7640"
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},
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{
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"name": "https://github.com/libgit2/libgit2/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/libgit2/libgit2/releases/tag/v1.8.6"
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},
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{
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"name": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
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}
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],
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"affected": [
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{
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"vendor": "libgit2",
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"product": "libgit2",
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"versions": [
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{
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"version": "< 1.8.6",
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"status": "affected"
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},
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{
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"version": ">= 1.9.0, < 1.9.5",
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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": "2026-08-20T18:36:43.055Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, libgit2 performs a fixed-size strncmp in set_data in src/libgit2/transports/smart_pkt.c without first verifying that the smart-protocol pkt-line capability buffer contains 14 bytes. A malicious Git server can make bytes after the pkt-line complete object-format=, causing format_str to advance beyond the pkt-line and the following memchr length calculation to underflow. The resulting heap out-of-bounds walk can crash a client during the first refs-advertisement packet over HTTP, HTTPS, SSH, or the Git protocol. This issue is fixed in versions 1.8.6 and 1.9.5."
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}
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],
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"source": {
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"advisory": "GHSA-pm24-4jhq-3xvm",
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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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"references": [
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{
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"url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-pm24-4jhq-3xvm",
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"tags": [
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"exploit"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-20T19:18:28.320266Z",
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"id": "CVE-2026-53587",
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"options": [
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{
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"Exploitation": "poc"
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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": "2026-08-20T19:18:33.821Z"
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}
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}
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]
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}
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} |