CVE-2026-89726: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-rfcj-g8r9-q3mj
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Advisory Summary

CVE-2026-89726 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-2026-89726 at a Glance

CVE Identifier CVE-2026-89726
GHSA Identifier GHSA-rfcj-g8r9-q3mj
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-2026-89726

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-2026-89726, 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: lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen() Patch series "lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()", v2. This series fixes an off-by-one out-of-bounds read in ucs2_strnlen(). The first patch is the real fix, the second patch comes as a bonus and fixes the code indentation. This patch (of 2): ucs2_strnlen() checks the current character before checking whether the caller-provided maximum length has been reached. If the input is not NUL-terminated within that bound, the loop can read one ucs2_char_t past the limit. Test the length before dereferencing to prevent an off-by-one out-of-bounds read.

References

NVD — CVE-2026-89726 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89726
git.kernel.org/stable/c/04ae68af41... WEB
https://git.kernel.org/stable/c/04ae68af4107600120c3c41c94268f43bc350d48
git.kernel.org/stable/c/1b0dc3cbb8... WEB
https://git.kernel.org/stable/c/1b0dc3cbb8630f0b5cb34d848628225920a904be
git.kernel.org/stable/c/2e5a70a175... WEB
https://git.kernel.org/stable/c/2e5a70a175f0c74e7238b013a96c4eabc3002934
git.kernel.org/stable/c/3ada20e110... WEB
https://git.kernel.org/stable/c/3ada20e110bf3245edb0a3bcddadc33d0f142f8d
git.kernel.org/stable/c/60c74f42f5... WEB
https://git.kernel.org/stable/c/60c74f42f5abddb85dd919b4448d5474e65dbe76
git.kernel.org/stable/c/709eb41ada... WEB
https://git.kernel.org/stable/c/709eb41adaf78d59d4579a13a898125919b69bcc
git.kernel.org/stable/c/7d658da725... WEB
https://git.kernel.org/stable/c/7d658da725ea81c91f73087547b97e7ced82d62b
git.kernel.org/stable/c/cec0d03fe7... WEB
https://git.kernel.org/stable/c/cec0d03fe785380540dc1b4d07c80f67ae2ffc78

Frequently Asked Questions

What is CVE-2026-89726?
CVE-2026-89726 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-2026-89726?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89726?
CVE-2026-89726 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89726?
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-rfcj-g8r9-q3mj",
  "modified" : "2026-09-14T15:32:35Z",
  "published" : "2026-09-11T21:31:38Z",
  "aliases" : [ "CVE-2026-89726" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nlib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()\n\nPatch series \"lib/ucs2_string.c: fix out-of-bounds read in\nucs2_strnlen()\", v2.\n\nThis series fixes an off-by-one out-of-bounds read in ucs2_strnlen().\n\nThe first patch is the real fix, the second patch comes as a bonus and\nfixes the code indentation.\n\n\nThis patch (of 2):\n\nucs2_strnlen() checks the current character before checking whether the\ncaller-provided maximum length has been reached.  If the input is not\nNUL-terminated within that bound, the loop can read one ucs2_char_t past\nthe limit.\n\nTest the length before dereferencing to prevent an off-by-one\nout-of-bounds read.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89726"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/04ae68af4107600120c3c41c94268f43bc350d48"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1b0dc3cbb8630f0b5cb34d848628225920a904be"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2e5a70a175f0c74e7238b013a96c4eabc3002934"
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    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cec0d03fe785380540dc1b4d07c80f67ae2ffc78"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:20:02Z"
  }
}