CVE-2026-89524: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-5r7p-vjpr-vvgf
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CVSS 8.1
Published
Advisory Summary

CVE-2026-89524 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-2026-89524 at a Glance

CVE Identifier CVE-2026-89524
GHSA Identifier GHSA-5r7p-vjpr-vvgf
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:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

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

How to Fix CVE-2026-89524

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-2026-89524, 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: wifi: ath6kl: clamp assoc request/response lengths before subtracting IE offsets ath6kl_cfg80211_connect_event() subtracts fixed IE offsets from assoc_req_len (-= 4) and assoc_resp_len (-= 6), both u8, with no lower bound. The aggregate check recently added to ath6kl_wmi_connect_event_rx() bounds the declared lengths from above (their sum must fit the received event), but an assoc request/response shorter than its fixed offset still underflows here: the u8 wraps to ~250, and cfg80211_connect_result() / cfg80211_roamed() then treat that wrapped value as the IE length and copy that many bytes out of the small assoc_info buffer to user space via nl80211, disclosing adjacent slab memory. Clamp both lengths to their offsets before subtracting. Found by 0sec (https://0sec.ai) using automated source analysis; the missing lower bound is evident from source. Compile-tested.

References

NVD — CVE-2026-89524 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89524
git.kernel.org/stable/c/225587bdbf... WEB
https://git.kernel.org/stable/c/225587bdbf4b0eb5265a71ee4dc183561a1857fc
git.kernel.org/stable/c/3bbd05723d... WEB
https://git.kernel.org/stable/c/3bbd05723d15dd06f0560bcd94fbf9a91b5f5613
git.kernel.org/stable/c/6deb4d7a0c... WEB
https://git.kernel.org/stable/c/6deb4d7a0c3d91821b2a8d5239e3d9933d9217d9
git.kernel.org/stable/c/8eb73016fb... WEB
https://git.kernel.org/stable/c/8eb73016fb3968cf2db3987a92764563a3af773a
git.kernel.org/stable/c/d337213a88... WEB
https://git.kernel.org/stable/c/d337213a889705a69735079606d0b4c672b17605
git.kernel.org/stable/c/e11d5ae96d... WEB
https://git.kernel.org/stable/c/e11d5ae96d5e52cb48fa27c6ad352d766d0322fb
git.kernel.org/stable/c/e1330d719c... WEB
https://git.kernel.org/stable/c/e1330d719c047c4d8190a16be034b29fc601a815
git.kernel.org/stable/c/e3619bed5d... WEB
https://git.kernel.org/stable/c/e3619bed5da125713b29ac881dc66f5e06606f88

Frequently Asked Questions

What is CVE-2026-89524?
CVE-2026-89524 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-2026-89524?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89524?
CVE-2026-89524 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-89524?
CVE-2026-89524 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89524?
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-5r7p-vjpr-vvgf",
  "modified" : "2026-09-14T15:32:27Z",
  "published" : "2026-09-11T21:31:30Z",
  "aliases" : [ "CVE-2026-89524" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: clamp assoc request/response lengths before subtracting IE offsets\n\nath6kl_cfg80211_connect_event() subtracts fixed IE offsets from\nassoc_req_len (-= 4) and assoc_resp_len (-= 6), both u8, with no lower\nbound. The aggregate check recently added to ath6kl_wmi_connect_event_rx()\nbounds the declared lengths from above (their sum must fit the received\nevent), but an assoc request/response shorter than its fixed offset still\nunderflows here: the u8 wraps to ~250, and cfg80211_connect_result() /\ncfg80211_roamed() then treat that wrapped value as the IE length and copy\nthat many bytes out of the small assoc_info buffer to user space via\nnl80211, disclosing adjacent slab memory.\n\nClamp both lengths to their offsets before subtracting.\n\nFound by 0sec (https://0sec.ai) using automated source analysis; the\nmissing lower bound is evident from source. Compile-tested.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89524"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/225587bdbf4b0eb5265a71ee4dc183561a1857fc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3bbd05723d15dd06f0560bcd94fbf9a91b5f5613"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6deb4d7a0c3d91821b2a8d5239e3d9933d9217d9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8eb73016fb3968cf2db3987a92764563a3af773a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d337213a889705a69735079606d0b4c672b17605"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e11d5ae96d5e52cb48fa27c6ad352d766d0322fb"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e1330d719c047c4d8190a16be034b29fc601a815"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e3619bed5da125713b29ac881dc66f5e06606f88"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:35Z"
  }
}