CVE-2026-98261: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-mfc9-mfpp-wwcf
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CVSS 8.1
Published
Advisory Summary

CVE-2026-98261 is a HIGH (CVSS 8.1) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-98261 at a Glance

CVE Identifier CVE-2026-98261
GHSA Identifier GHSA-mfc9-mfpp-wwcf
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.1

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
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-2026-98261

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-2026-98261, 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: cifs: Fix server use-after-free in cifs_chan_skip_or_disable() When a secondary channel is no longer supported by the server, cifs_chan_skip_or_disable() drops the channel reference with cifs_put_tcp_session() and then continues to use the server pointer by calling cifs_signal_cifsd_for_reconnect() on it and reading its primary_server pointer. cifs_put_tcp_session() can drop the last reference of the channel and tear it down, so both the channel and the primary server (whose reference is also dropped by cifs_put_tcp_session()) can be freed before they are signaled for reconnect. Signal the channel and the primary server and capture the primary server pointer before dropping the channel reference with cifs_put_tcp_session().

References

NVD — CVE-2026-98261 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98261
git.kernel.org/stable/c/0338489960... WEB
https://git.kernel.org/stable/c/0338489960ddad6368bce55e8adbc176c523093d
git.kernel.org/stable/c/717e0a2503... WEB
https://git.kernel.org/stable/c/717e0a25036b6c92cecace30913b2d874a4c22b8
git.kernel.org/stable/c/7a1b27780b... WEB
https://git.kernel.org/stable/c/7a1b27780b113583a94256d58dabfe7c0d9286e7
git.kernel.org/stable/c/edd52eae5f... WEB
https://git.kernel.org/stable/c/edd52eae5fcfb8433b6bb0e7cd98db438fe01227
git.kernel.org/stable/c/fcc0a935bb... WEB
https://git.kernel.org/stable/c/fcc0a935bb6e37ecbf7e4335061309f896f35780

Frequently Asked Questions

What is CVE-2026-98261?
CVE-2026-98261 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-2026-98261?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-98261?
CVE-2026-98261 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-98261?
CVE-2026-98261 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98261?
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-mfc9-mfpp-wwcf",
  "modified" : "2026-10-07T09:32:15Z",
  "published" : "2026-10-06T09:31:32Z",
  "aliases" : [ "CVE-2026-98261" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix server use-after-free in cifs_chan_skip_or_disable()\n\nWhen a secondary channel is no longer supported by the server,\ncifs_chan_skip_or_disable() drops the channel reference with\ncifs_put_tcp_session() and then continues to use the server pointer by\ncalling cifs_signal_cifsd_for_reconnect() on it and reading its\nprimary_server pointer. cifs_put_tcp_session() can drop the last\nreference of the channel and tear it down, so both the channel and the\nprimary server (whose reference is also dropped by\ncifs_put_tcp_session()) can be freed before they are signaled for\nreconnect.\n\nSignal the channel and the primary server and capture the primary\nserver pointer before dropping the channel reference with\ncifs_put_tcp_session().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98261"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0338489960ddad6368bce55e8adbc176c523093d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/717e0a25036b6c92cecace30913b2d874a4c22b8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7a1b27780b113583a94256d58dabfe7c0d9286e7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/edd52eae5fcfb8433b6bb0e7cd98db438fe01227"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fcc0a935bb6e37ecbf7e4335061309f896f35780"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-06T09:18:15Z"
  }
}