CVE-2026-98794: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-c8w6-8f9f-2m9q
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Advisory Summary

CVE-2026-98794 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-98794 at a Glance

CVE Identifier CVE-2026-98794
GHSA Identifier GHSA-c8w6-8f9f-2m9q
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-98794

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-98794, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: ipvs: filter some flags received in the backup server While the IPVS SYNC protocol is not secure by design we can still protect the backup server from messages that can wreak havoc. This commit addresses problems from received connection flags or their combinations. We now drop messages as follows: 1. the NO_CPORT+TEMPLATE combination allows lookups for normal connections to hit template which can break in many ways. While the master does not sync connections with NO_CPORT flag, i.e. before they are established, we still accept NO_CPORT without TEMPLATE. 2. ONE_PACKET: it is not sent by master, so we do not expect it in backup. Before now it was ignored by IP_VS_CONN_F_BACKUP_MASK for protocol v1 while protocol v0 created connections that are not hashed and dropped immediately. Better to apply the IP_VS_CONN_F_BACKUP_MASK also to the flags from v0 messages for consistency with v1.

References

NVD — CVE-2026-98794 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98794
git.kernel.org/stable/c/45a9311183... WEB
https://git.kernel.org/stable/c/45a93111835ccfea7d969ec73588e33745fd9834
git.kernel.org/stable/c/55d033324f... WEB
https://git.kernel.org/stable/c/55d033324f67a15ff56be6d38d6e87f644e0ed62
git.kernel.org/stable/c/f4cd1db7d4... WEB
https://git.kernel.org/stable/c/f4cd1db7d421e82945713a36084bb0c35b75b27e
git.kernel.org/stable/c/f96e91748f... WEB
https://git.kernel.org/stable/c/f96e91748f6304668fe647e686d199d7207d36f1

Frequently Asked Questions

What is CVE-2026-98794?
CVE-2026-98794 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-98794?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98794?
CVE-2026-98794 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98794?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c8w6-8f9f-2m9q",
  "modified" : "2026-10-18T18:32:04Z",
  "published" : "2026-10-18T18:32:04Z",
  "aliases" : [ "CVE-2026-98794" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: filter some flags received in the backup server\n\nWhile the IPVS SYNC protocol is not secure by design\nwe can still protect the backup server from messages that\ncan wreak havoc.\n\nThis commit addresses problems from received connection flags\nor their combinations. We now drop messages as follows:\n\n1. the NO_CPORT+TEMPLATE combination allows lookups for normal\nconnections to hit template which can break in many ways.\nWhile the master does not sync connections with NO_CPORT flag,\ni.e. before they are established, we still accept NO_CPORT\nwithout TEMPLATE.\n\n2. ONE_PACKET: it is not sent by master, so we do not\nexpect it in backup. Before now it was ignored by\nIP_VS_CONN_F_BACKUP_MASK for protocol v1 while protocol\nv0 created connections that are not hashed and dropped\nimmediately. Better to apply the IP_VS_CONN_F_BACKUP_MASK\nalso to the flags from v0 messages for consistency with v1.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98794"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/45a93111835ccfea7d969ec73588e33745fd9834"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/55d033324f67a15ff56be6d38d6e87f644e0ed62"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f4cd1db7d421e82945713a36084bb0c35b75b27e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f96e91748f6304668fe647e686d199d7207d36f1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:33Z"
  }
}