RHSA-2026:83663
Vulnerability from csaf_redhat - Published: 2026-10-15 21:17 - Updated: 2026-10-16 18:58A flaw was found in oras-go. The file content store, intended to confine writes to a specified working directory, does not properly account for symbolic link (symlink) traversal. A remote attacker, by providing a specially crafted blob title, could exploit this vulnerability to create files outside the intended working directory. This filesystem boundary bypass allows for arbitrary file creation, potentially leading to unauthorized data modification or system compromise depending on the runtime environment.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-validation-rhel9@sha256:3535fe7d87872ca3ec41a0eccb05f66b84f05e33044ab182398997465e95007b_amd64 | — |
Vendor Fix
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-api-rhel9@sha256:a971c06918017c4b36f6f1f3dbff8a61d336b68b9dac22a124a757ae45f809fc_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-cli-download-rhel9@sha256:2ec931bab5cce67a24f7f55536b090e91ce8f13bda3fe7324b133cc35f682fa9_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-console-plugin-rhel9@sha256:a8cea4674182c181ac918ebb74ada1a3029c8c75d844e1a022ca583ca5ca9e44_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-controller-rhel9@sha256:87fb394733eabb821d8be779316e5225d45cf9ce4f09225a7c203f2a14d6385c_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-must-gather-rhel9@sha256:057bf56acae27a2a7c4fbb9ebd2857b932d9324b2002cab41f21f2931431a098_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-openstack-populator-rhel9@sha256:37fe0eff444c0b4ef70c9aefb836d9d412b68aecc3050574768b2f376c971be8_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-operator-bundle@sha256:3f7320158484a43b3576a675be4decb5d16e2a43287fa97bcf4717cedc32d2ed_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-ova-provider-server-rhel9@sha256:a5fabf9832c0dda8be34e43f49284f5b6c1c7bbb5ad75d89b7331c3a8d598a95_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-ova-proxy-rhel9@sha256:057f4104612a3923c224c14e0b4d4a65130d71098fdfcb1f0144ccb9670f75c5_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-populator-controller-rhel9@sha256:77c123b144057c5a08d4d11eda84478706bd11ef4a8a1115e7d617a14827be67_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-rhel9-operator@sha256:df61f9084cb325db0dc5b38628fa0f06a958d4951714775e2cecfa041d1bb225_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-virt-v2v-rhel9@sha256:e3d35ef0434fa976a2f6a8c910391d669fa145ad67e2ca36d281497d088a8d8f_amd64 | — | ||
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-vsphere-xcopy-volume-populator-rhel9@sha256:292fc6d7fbb4d2d77dac30784303a4d2f782795416b68259cfd772d9e3d518f6_amd64 | — |
A flaw was found in golang.org/x/text. The norm.Iter component can enter an infinite loop when processing input that contains invalid UTF-8 (Unicode Transformation Format - 8-bit) bytes. A remote attacker could exploit this vulnerability by providing specially crafted input, leading to a Denial of Service (DoS) condition where the affected application becomes unresponsive.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-api-rhel9@sha256:a971c06918017c4b36f6f1f3dbff8a61d336b68b9dac22a124a757ae45f809fc_amd64 | — |
Vendor Fix
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-cli-download-rhel9@sha256:2ec931bab5cce67a24f7f55536b090e91ce8f13bda3fe7324b133cc35f682fa9_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-console-plugin-rhel9@sha256:a8cea4674182c181ac918ebb74ada1a3029c8c75d844e1a022ca583ca5ca9e44_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-controller-rhel9@sha256:87fb394733eabb821d8be779316e5225d45cf9ce4f09225a7c203f2a14d6385c_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-must-gather-rhel9@sha256:057bf56acae27a2a7c4fbb9ebd2857b932d9324b2002cab41f21f2931431a098_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-openstack-populator-rhel9@sha256:37fe0eff444c0b4ef70c9aefb836d9d412b68aecc3050574768b2f376c971be8_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-operator-bundle@sha256:3f7320158484a43b3576a675be4decb5d16e2a43287fa97bcf4717cedc32d2ed_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-ova-provider-server-rhel9@sha256:a5fabf9832c0dda8be34e43f49284f5b6c1c7bbb5ad75d89b7331c3a8d598a95_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-ova-proxy-rhel9@sha256:057f4104612a3923c224c14e0b4d4a65130d71098fdfcb1f0144ccb9670f75c5_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-populator-controller-rhel9@sha256:77c123b144057c5a08d4d11eda84478706bd11ef4a8a1115e7d617a14827be67_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-rhel9-operator@sha256:df61f9084cb325db0dc5b38628fa0f06a958d4951714775e2cecfa041d1bb225_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-validation-rhel9@sha256:3535fe7d87872ca3ec41a0eccb05f66b84f05e33044ab182398997465e95007b_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-virt-v2v-rhel9@sha256:e3d35ef0434fa976a2f6a8c910391d669fa145ad67e2ca36d281497d088a8d8f_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-vsphere-xcopy-volume-populator-rhel9@sha256:292fc6d7fbb4d2d77dac30784303a4d2f782795416b68259cfd772d9e3d518f6_amd64 | — |
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A flaw was found in linkify-it, a library for recognizing links. A remote attacker could exploit this vulnerability by providing specially crafted user text. The mailto: schema validator, when processing this input, can be repeatedly invoked, leading to excessive CPU consumption. This can result in a Denial of Service (DoS) for the affected system.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-console-plugin-rhel9@sha256:a8cea4674182c181ac918ebb74ada1a3029c8c75d844e1a022ca583ca5ca9e44_amd64 | — |
Vendor Fix
fix
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-api-rhel9@sha256:a971c06918017c4b36f6f1f3dbff8a61d336b68b9dac22a124a757ae45f809fc_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-cli-download-rhel9@sha256:2ec931bab5cce67a24f7f55536b090e91ce8f13bda3fe7324b133cc35f682fa9_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-controller-rhel9@sha256:87fb394733eabb821d8be779316e5225d45cf9ce4f09225a7c203f2a14d6385c_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-must-gather-rhel9@sha256:057bf56acae27a2a7c4fbb9ebd2857b932d9324b2002cab41f21f2931431a098_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-openstack-populator-rhel9@sha256:37fe0eff444c0b4ef70c9aefb836d9d412b68aecc3050574768b2f376c971be8_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-operator-bundle@sha256:3f7320158484a43b3576a675be4decb5d16e2a43287fa97bcf4717cedc32d2ed_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-ova-provider-server-rhel9@sha256:a5fabf9832c0dda8be34e43f49284f5b6c1c7bbb5ad75d89b7331c3a8d598a95_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-ova-proxy-rhel9@sha256:057f4104612a3923c224c14e0b4d4a65130d71098fdfcb1f0144ccb9670f75c5_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-populator-controller-rhel9@sha256:77c123b144057c5a08d4d11eda84478706bd11ef4a8a1115e7d617a14827be67_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-rhel9-operator@sha256:df61f9084cb325db0dc5b38628fa0f06a958d4951714775e2cecfa041d1bb225_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-validation-rhel9@sha256:3535fe7d87872ca3ec41a0eccb05f66b84f05e33044ab182398997465e95007b_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-virt-v2v-rhel9@sha256:e3d35ef0434fa976a2f6a8c910391d669fa145ad67e2ca36d281497d088a8d8f_amd64 | — |
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| Unresolved product id: Migration Toolkit for Virtualization 2.10:registry.redhat.io/migration-toolkit-virtualization/mtv-vsphere-xcopy-volume-populator-rhel9@sha256:292fc6d7fbb4d2d77dac30784303a4d2f782795416b68259cfd772d9e3d518f6_amd64 | — |
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A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer() can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a Denial of Service (DoS). In some deployments, this attack can be unauthenticated.
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"title": "Vulnerability description"
},
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"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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},
{
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},
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},
{
"category": "external",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50162"
},
{
"category": "external",
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"url": "https://github.com/oras-project/oras-go/security/advisories/GHSA-8xwf-rjm4-xvhv"
}
],
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{
"category": "vendor_fix",
"date": "2026-10-15T21:17:46+00:00",
"details": "Before applying this update, make sure all previously released errata relevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\n https://docs.redhat.com/en/documentation/migration_toolkit_for_virtualization/2.10/html-single/migrating_your_virtual_machines_to_red_hat_openshift_virtualization/index#assembly_upgrading-uninstalling-mtv_mtv",
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"category": "none"
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"url": "https://access.redhat.com/errata/RHSA-2026:83663"
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{
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
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{
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"cwe": {
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}
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{
"category": "description",
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/text: golang.org/x/text: Denial of Service via invalid UTF-8 input",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Important: This flaw in the `golang.org/x/text` library can lead to a denial of service. An attacker could provide specially crafted invalid UTF-8 input to an application using the affected `norm.Iter` functionality, causing it to enter an infinite loop and become unresponsive.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-56852"
},
{
"category": "external",
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},
{
"category": "external",
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},
{
"category": "external",
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},
{
"category": "external",
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},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-5970",
"url": "https://pkg.go.dev/vuln/GO-2026-5970"
}
],
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{
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "linkify-it: linkify-it: Denial of Service via crafted mailto: links",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important denial of service vulnerability in the `linkify-it` library. Systems processing untrusted user-supplied text containing specially crafted `mailto:` links may experience excessive CPU consumption due to a quadratic complexity issue in the `mailto:` schema validator, leading to temporary service disruption.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"title": "linkify-it: linkify-it: Denial of Service via crafted mailto: links"
},
{
"cve": "CVE-2026-84445",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
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],
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2533175"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer() can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a Denial of Service (DoS). In some deployments, this attack can be unauthenticated.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
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"summary": "Canonical URL",
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},
{
"category": "external",
"summary": "RHBZ#2533175",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533175"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-84445",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84445"
},
{
"category": "external",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84445"
},
{
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"url": "https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7"
},
{
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"summary": "https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4",
"url": "https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4"
},
{
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"url": "https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f"
},
{
"category": "external",
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},
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"release_date": "2026-09-14T16:11:41.401000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-15T21:17:46+00:00",
"details": "Before applying this update, make sure all previously released errata relevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\n https://docs.redhat.com/en/documentation/migration_toolkit_for_virtualization/2.10/html-single/migrating_your_virtual_machines_to_red_hat_openshift_virtualization/index#assembly_upgrading-uninstalling-mtv_mtv",
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"attackVector": "NETWORK",
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"baseScore": 7.5,
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"scope": "UNCHANGED",
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"title": "google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests"
}
]
}
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Sightings
| Author | Source | Type | Date | Other |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.