132 lines
5.4 KiB
JSON
132 lines
5.4 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-2026-55368",
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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": "2026-06-16T18:57:40.181Z",
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"datePublished": "2026-11-04T21:38:04.613Z",
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"dateUpdated": "2026-11-09T16:57:20.944Z"
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},
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"containers": {
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"cna": {
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"title": "h2o: buffer overflow when using the %{error}x log directive",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-787",
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"lang": "en",
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"description": "CWE-787: Out-of-bounds Write",
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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": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 8.1,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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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:H/PR:N/UI:N/S:U/C:H/I:H/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/h2o/h2o/security/advisories/GHSA-m998-r5ww-rqjf",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/h2o/h2o/security/advisories/GHSA-m998-r5ww-rqjf"
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},
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{
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"name": "https://github.com/h2o/h2o/pull/3757",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/h2o/h2o/pull/3757"
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},
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{
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"name": "https://github.com/h2o/h2o/commit/48b7ae12107fd2b118e4641da49599e9aac8edd8",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/h2o/h2o/commit/48b7ae12107fd2b118e4641da49599e9aac8edd8"
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}
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],
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"affected": [
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{
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"vendor": "h2o",
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"product": "h2o",
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"versions": [
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{
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"version": "< 48b7ae12107fd2b118e4641da49599e9aac8edd8",
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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": "2026-11-04T21:38:04.613Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 48b7ae12107fd2b118e4641da49599e9aac8edd8, H2O's access-log formatter could write past its log-line buffer when an affected custom access-log format was configured. The allocation errors affected %{error}x, %q when the query string was empty, and numeric elements whose temporary terminating NUL reached the end of the buffer. A matching request could crash the server, while the effect of the one-byte NUL overwrite beyond a crash was not established. This vulnerability is fixed with commit 48b7ae12107fd2b118e4641da49599e9aac8edd8."
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}
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],
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"source": {
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"advisory": "GHSA-m998-r5ww-rqjf",
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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": "2026-11-09T16:11:50.576532Z",
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"id": "CVE-2026-55368",
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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": "no"
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},
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{
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"Technical Impact": "total"
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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": "2026-11-09T16:57:20.944Z"
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}
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}
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]
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}
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} |