291 lines
12 KiB
JSON
291 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2026-93011",
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"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"state": "PUBLISHED",
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"dateReserved": "2026-09-17T14:35:34.562Z",
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"datePublished": "2026-10-29T12:47:10.170Z",
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"dateUpdated": "2026-11-06T01:50:37.336Z"
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},
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"containers": {
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"cna": {
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"title": "Dnsmasq: dnsmasq: heap out-of-bounds write in dnssec validator via to_wire/from_wire transforms",
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"metrics": [
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{
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"other": {
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"content": {
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"value": "Moderate",
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},
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"type": "Red Hat severity rating"
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},
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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": "NONE",
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"baseScore": 5.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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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:L/A:N",
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"version": "3.1"
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},
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"format": "CVSS"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "A flaw was found in dnsmasq. After a reduction of internal domain-name buffer sizes, the DNSSEC validator can write a few bytes past a name buffer when converting names to and from DNS wire format. An attacker who can cause the server to validate a crafted DNSSEC response may overwrite a small amount of adjacent heap metadata. DNSSEC support is not compiled in by default and must also be enabled at runtime."
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}
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],
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"affected": [
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{
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"vendor": "Red Hat",
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"product": "Red Hat Ceph Storage 9",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "rhceph/alloy-rhel10",
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 10",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "dnsmasq",
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"cpe:/a:redhat:enterprise_linux:10"
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"vendor": "Red Hat",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "dnsmasq",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/o:redhat:rhel_els:6"
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 7",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "dnsmasq",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/o:redhat:rhel_els:7"
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 8",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "dnsmasq",
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"defaultStatus": "affected",
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{
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"vendor": "Red Hat",
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"packageName": "dnsmasq",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:enterprise_linux:9"
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]
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 4",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift4/ose-baremetal-runtimecfg-rhel8",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:4"
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]
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 4",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift4/ose-baremetal-runtimecfg-rhel9",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:4"
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 4",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift/ose-rhel-coreos-8",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:4"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 4",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift/ose-rhel-coreos-9",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:4"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 5",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift5/ose-baremetal-runtimecfg-rhel9",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:5"
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]
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{
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"vendor": "Red Hat",
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenStack Platform 13 (Queens)",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "dnsmasq",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openstack:13"
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenStack Platform 18.0",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "rhoso-operators/infra-rhel9-operator",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openstack:18.0"
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],
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"references": [
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{
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"url": "https://access.redhat.com/security/cve/CVE-2026-93011",
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"tags": [
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]
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},
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{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536082",
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"name": "RHBZ#2536082",
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"tags": [
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"issue-tracking",
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}
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],
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"datePublic": "2026-10-28T09:30:00.000Z",
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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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"description": "Out-of-bounds Write",
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"lang": "en",
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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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"x_redhatCweChain": "CWE-787: Out-of-bounds Write",
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"workarounds": [
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{
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"lang": "en",
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"value": "The following measures reduce risk:\n\n1. Do not enable --dnssec or --trust-anchor unless DNSSEC validation is required.\n2. Omit -DHAVE_DNSSEC from COPTS (this is the default build).\n3. If DNSSEC validation is required, restrict dnsmasq to trusted upstream resolvers."
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-09-14T00:00:00.000Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-10-28T09:30:00.000Z",
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"value": "Made public."
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Red Hat would like to thank Shubham Raj (Causal Security) for reporting this issue."
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}
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],
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},
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"timestamp": "2026-10-29T14:07:10.217144Z",
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"id": "CVE-2026-93011",
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"options": [
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{
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"Automatable": "yes"
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"Technical Impact": "partial"
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} |