MSRC_CVE-2026-4645
Vulnerability from csaf_microsoft - Published: 2026-03-02 00:00 - Updated: 2026-04-08 01:41Summary
Github.com/antchfx/xpath: xpath: denial of service via crafted boolean xpath expressions
Notes
Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
7.5 (High)
Vendor Fix
1.29.4-22:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade
https://learn.microsoft.com/en-us/azure/azure-lin…
Vendor Fix
1.3.2-30:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade
https://learn.microsoft.com/en-us/azure/azure-lin…
Vendor Fix
1.31.0-17:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade
https://learn.microsoft.com/en-us/azure/azure-lin…
Vendor Fix
1.31.0-16:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade
https://learn.microsoft.com/en-us/azure/azure-lin…
References
| URL | Category | |
|---|---|---|
{
"document": {
"category": "csaf_vex",
"csaf_version": "2.0",
"distribution": {
"text": "Public",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-US",
"notes": [
{
"category": "general",
"text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
"title": "Additional Resources"
},
{
"category": "legal_disclaimer",
"text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
"title": "Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2026-4645 Github.com/antchfx/xpath: xpath: denial of service via crafted boolean xpath expressions - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-4645.json"
},
{
"category": "external",
"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
}
],
"title": "Github.com/antchfx/xpath: xpath: denial of service via crafted boolean xpath expressions",
"tracking": {
"current_release_date": "2026-04-08T01:41:42.000Z",
"generator": {
"date": "2026-04-08T07:12:41.697Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2026-4645",
"initial_release_date": "2026-03-02T00:00:00.000Z",
"revision_history": [
{
"date": "2026-03-27T01:05:07.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
},
{
"date": "2026-03-28T01:39:15.000Z",
"legacy_version": "2",
"number": "2",
"summary": "Information published."
},
{
"date": "2026-03-28T14:39:04.000Z",
"legacy_version": "3",
"number": "3",
"summary": "Information published."
},
{
"date": "2026-03-31T14:56:03.000Z",
"legacy_version": "4",
"number": "4",
"summary": "Information published."
},
{
"date": "2026-04-01T01:56:30.000Z",
"legacy_version": "5",
"number": "5",
"summary": "Information published."
},
{
"date": "2026-04-08T01:41:42.000Z",
"legacy_version": "6",
"number": "6",
"summary": "Information published."
}
],
"status": "final",
"version": "6"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "2.0",
"product": {
"name": "CBL Mariner 2.0",
"product_id": "17086"
}
},
{
"category": "product_version",
"name": "3.0",
"product": {
"name": "Azure Linux 3.0",
"product_id": "17084"
}
}
],
"category": "product_name",
"name": "Azure Linux"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003ccbl2 telegraf 1.29.4-21",
"product": {
"name": "\u003ccbl2 telegraf 1.29.4-21",
"product_id": "4"
}
},
{
"category": "product_version",
"name": "cbl2 telegraf 1.29.4-21",
"product": {
"name": "cbl2 telegraf 1.29.4-21",
"product_id": "20951"
}
},
{
"category": "product_version_range",
"name": "\u003cazl3 telegraf 1.31.0-15",
"product": {
"name": "\u003cazl3 telegraf 1.31.0-15",
"product_id": "3"
}
},
{
"category": "product_version",
"name": "azl3 telegraf 1.31.0-15",
"product": {
"name": "azl3 telegraf 1.31.0-15",
"product_id": "20969"
}
},
{
"category": "product_version_range",
"name": "\u003cazl3 telegraf 1.31.0-17",
"product": {
"name": "\u003cazl3 telegraf 1.31.0-17",
"product_id": "1"
}
},
{
"category": "product_version",
"name": "azl3 telegraf 1.31.0-17",
"product": {
"name": "azl3 telegraf 1.31.0-17",
"product_id": "21127"
}
}
],
"category": "product_name",
"name": "telegraf"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003ccbl2 terraform 1.3.2-29",
"product": {
"name": "\u003ccbl2 terraform 1.3.2-29",
"product_id": "2"
}
},
{
"category": "product_version",
"name": "cbl2 terraform 1.3.2-29",
"product": {
"name": "cbl2 terraform 1.3.2-29",
"product_id": "21080"
}
}
],
"category": "product_name",
"name": "terraform"
}
],
"category": "vendor",
"name": "Microsoft"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccbl2 telegraf 1.29.4-21 as a component of CBL Mariner 2.0",
"product_id": "17086-4"
},
"product_reference": "4",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cbl2 telegraf 1.29.4-21 as a component of CBL Mariner 2.0",
"product_id": "20951-17086"
},
"product_reference": "20951",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccbl2 terraform 1.3.2-29 as a component of CBL Mariner 2.0",
"product_id": "17086-2"
},
"product_reference": "2",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cbl2 terraform 1.3.2-29 as a component of CBL Mariner 2.0",
"product_id": "21080-17086"
},
"product_reference": "21080",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003cazl3 telegraf 1.31.0-15 as a component of Azure Linux 3.0",
"product_id": "17084-3"
},
"product_reference": "3",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 telegraf 1.31.0-15 as a component of Azure Linux 3.0",
"product_id": "20969-17084"
},
"product_reference": "20969",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003cazl3 telegraf 1.31.0-17 as a component of Azure Linux 3.0",
"product_id": "17084-1"
},
"product_reference": "1",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 telegraf 1.31.0-17 as a component of Azure Linux 3.0",
"product_id": "21127-17084"
},
"product_reference": "21127",
"relates_to_product_reference": "17084"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-4645",
"cwe": {
"id": "CWE-835",
"name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
},
"notes": [
{
"category": "general",
"text": "redhat",
"title": "Assigning CNA"
}
],
"product_status": {
"fixed": [
"20951-17086",
"21080-17086",
"20969-17084",
"21127-17084"
],
"known_affected": [
"17086-4",
"17086-2",
"17084-3",
"17084-1"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-4645 Github.com/antchfx/xpath: xpath: denial of service via crafted boolean xpath expressions - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-4645.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2026-03-27T01:05:07.000Z",
"details": "1.29.4-22:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17086-4"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
},
{
"category": "vendor_fix",
"date": "2026-03-27T01:05:07.000Z",
"details": "1.3.2-30:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17086-2"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
},
{
"category": "vendor_fix",
"date": "2026-03-27T01:05:07.000Z",
"details": "1.31.0-17:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17084-3"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
},
{
"category": "vendor_fix",
"date": "2026-03-27T01:05:07.000Z",
"details": "1.31.0-16:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17084-1"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"environmentalsScore": 0.0,
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 7.5,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"17086-4",
"17086-2",
"17084-3",
"17084-1"
]
}
],
"title": "Github.com/antchfx/xpath: xpath: denial of service via crafted boolean xpath expressions"
}
]
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
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.
Loading…
Loading…