CVE-2026-97940: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-g66h-hcwj-f29f
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CVSS 7.8
Published
Advisory Summary

CVE-2026-97940 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-97940 at a Glance

CVE Identifier CVE-2026-97940
GHSA Identifier GHSA-g66h-hcwj-f29f
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-97940

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-2026-97940, 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: ipv6: fix fib6 walker UAF on seq stop ipv6_route_iter_active() treats a walker in FWS_U at the table root as already unlinked. fib6_del_route() can move a still-linked walker into that same state when the current leaf is the last route at the root, so ipv6_route_native_seq_stop() skips fib6_walker_unlink(). The seq private object can then be freed while it remains on net->ipv6.fib6_walkers. A later route deletion walks the dangling list and uses the freed walker. Use the list head as membership state and reinitialize it when unlinking. Keep the existing w->node check so a never-started iterator with a zeroed private object is not treated as linked. The same stop helper is used by /proc/net/ipv6_route and by the BPF ipv6_route iterator. The BPF show path only widens the race.

References

NVD — CVE-2026-97940 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-97940
git.kernel.org/stable/c/05b687ee04... WEB
https://git.kernel.org/stable/c/05b687ee04f816658f4a9cf586f4d2f129157943
git.kernel.org/stable/c/0eede16896... WEB
https://git.kernel.org/stable/c/0eede1689610e9eeaf729ba86fd1321799eb91a0
git.kernel.org/stable/c/14fdaba201... WEB
https://git.kernel.org/stable/c/14fdaba201fdff92a3e45994e02bccda409cb19d
git.kernel.org/stable/c/19b4ed644d... WEB
https://git.kernel.org/stable/c/19b4ed644d68098cc62ab612727f40d30f43476c
git.kernel.org/stable/c/4553cfafa8... WEB
https://git.kernel.org/stable/c/4553cfafa8d05c4ce20b1d18f79d9bb3b303fc02
git.kernel.org/stable/c/63407cddab... WEB
https://git.kernel.org/stable/c/63407cddabc5992b5ac03af165559f4a1968a032
git.kernel.org/stable/c/9a3f73d62c... WEB
https://git.kernel.org/stable/c/9a3f73d62c86271614eda4c43315230896a37018
git.kernel.org/stable/c/b89b691dd0... WEB
https://git.kernel.org/stable/c/b89b691dd00bf39b9ba39ab9446f8c62f419fa7b

Frequently Asked Questions

What is CVE-2026-97940?
CVE-2026-97940 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-2026-97940?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-97940?
CVE-2026-97940 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-97940?
CVE-2026-97940 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-97940?
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-g66h-hcwj-f29f",
  "modified" : "2026-10-03T12:31:21Z",
  "published" : "2026-09-25T12:31:29Z",
  "aliases" : [ "CVE-2026-97940" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fix fib6 walker UAF on seq stop\n\nipv6_route_iter_active() treats a walker in FWS_U at the table root as\nalready unlinked. fib6_del_route() can move a still-linked walker into\nthat same state when the current leaf is the last route at the root,\nso ipv6_route_native_seq_stop() skips fib6_walker_unlink(). The seq\nprivate object can then be freed while it remains on\nnet->ipv6.fib6_walkers. A later route deletion walks the dangling list\nand uses the freed walker.\n\nUse the list head as membership state and reinitialize it when\nunlinking. Keep the existing w->node check so a never-started iterator\nwith a zeroed private object is not treated as linked.\n\nThe same stop helper is used by /proc/net/ipv6_route and by the BPF\nipv6_route iterator. The BPF show path only widens the race.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-97940"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/05b687ee04f816658f4a9cf586f4d2f129157943"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0eede1689610e9eeaf729ba86fd1321799eb91a0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/14fdaba201fdff92a3e45994e02bccda409cb19d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/19b4ed644d68098cc62ab612727f40d30f43476c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4553cfafa8d05c4ce20b1d18f79d9bb3b303fc02"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/63407cddabc5992b5ac03af165559f4a1968a032"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9a3f73d62c86271614eda4c43315230896a37018"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b89b691dd00bf39b9ba39ab9446f8c62f419fa7b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-25T11:17:21Z"
  }
}