CVE-2026-63958: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-qx25-w5h5-ch8m
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Advisory Summary

CVE-2026-63958 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-2026-63958 at a Glance

CVE Identifier CVE-2026-63958
GHSA Identifier GHSA-qx25-w5h5-ch8m
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-2026-63958

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-2026-63958, 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: usb: typec: ucsi: validate connector number in ucsi_connector_change() The connector number in a UCSI CCI notification is a 7-bit field supplied by the PPM. ucsi_connector_change() uses it to index the ucsi->connector[] array without checking it against the number of connectors the PPM reported at init time, so a buggy or malicious PPM (EC firmware, or an I2C-attached UCSI controller on the ccg / stm32g0 / glink transports) can drive schedule_work() on memory past the end of the array. Reject connector numbers that are zero or exceed cap.num_connectors before dereferencing the array.

References

NVD — CVE-2026-63958 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63958
git.kernel.org/stable/c/0edd1e2158... WEB
https://git.kernel.org/stable/c/0edd1e21587b0483c7ceb993b9fb9668bbef7433
git.kernel.org/stable/c/156b6f0aec... WEB
https://git.kernel.org/stable/c/156b6f0aec6108909b0c4aedc78865b12766b347
git.kernel.org/stable/c/288a81a850... WEB
https://git.kernel.org/stable/c/288a81a8507052bcfbf884d39a463c44c42c5fd9
git.kernel.org/stable/c/5af2719b46... WEB
https://git.kernel.org/stable/c/5af2719b460ab904c504fc069d1dd2a3aa2b22b0
git.kernel.org/stable/c/bd24d92af4... WEB
https://git.kernel.org/stable/c/bd24d92af4ae021b6209f28e9a57e1bf2260d4fd
git.kernel.org/stable/c/cea949203f... WEB
https://git.kernel.org/stable/c/cea949203faef9cb783adc7b978cce056271e057

Frequently Asked Questions

What is CVE-2026-63958?
CVE-2026-63958 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-2026-63958?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-63958?
CVE-2026-63958 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-63958?
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-qx25-w5h5-ch8m",
  "modified" : "2026-07-19T18:31:47Z",
  "published" : "2026-07-19T18:31:47Z",
  "aliases" : [ "CVE-2026-63958" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: validate connector number in ucsi_connector_change()\n\nThe connector number in a UCSI CCI notification is a 7-bit field\nsupplied by the PPM.  ucsi_connector_change() uses it to index the\nucsi->connector[] array without checking it against the number of\nconnectors the PPM reported at init time, so a buggy or malicious PPM\n(EC firmware, or an I2C-attached UCSI controller on the ccg / stm32g0 /\nglink transports) can drive schedule_work() on memory past the end of\nthe array.\n\nReject connector numbers that are zero or exceed cap.num_connectors\nbefore dereferencing the array.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-63958"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0edd1e21587b0483c7ceb993b9fb9668bbef7433"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/156b6f0aec6108909b0c4aedc78865b12766b347"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/288a81a8507052bcfbf884d39a463c44c42c5fd9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5af2719b460ab904c504fc069d1dd2a3aa2b22b0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bd24d92af4ae021b6209f28e9a57e1bf2260d4fd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cea949203faef9cb783adc7b978cce056271e057"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:14Z"
  }
}