CVE-2026-63976: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-2c97-7qvf-wx4v
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CVSS 8.8
CWE-694
Published
Advisory Summary

CVE-2026-63976 is a HIGH (CVSS 8.8) security vulnerability vulnerability (CWE-694: Use of Multiple Resources with Duplicate Identifier) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product uses multiple resources that can have the same identifier, in a context in which unique identifiers are required.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-63976 at a Glance

CVE Identifier CVE-2026-63976
GHSA Identifier GHSA-2c97-7qvf-wx4v
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-694: Use of Multiple Resources with Duplicate Identifier
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

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:H/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 High (I:H)
Availability High (A:H)

How to Fix CVE-2026-63976

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-2026-63976, 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 CWE-694: Use of Multiple Resources with Duplicate Identifier, where the product uses multiple resources that can have the same identifier, in a context in which unique identifiers are required. 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: Bluetooth: l2cap: clear chan->ident on ECRED reconfiguration success l2cap_ecred_reconf_rsp() returns early on success without clearing chan->ident. Every other L2CAP response handler (l2cap_ecred_conn_rsp, l2cap_le_connect_rsp, l2cap_config_rsp) clears chan->ident after a successful transaction to prevent the channel from matching subsequent responses with the recycled ident value. A remote attacker that completed a reconfiguration as the peer can replay a failure response with the stale ident, causing the kernel to match and destroy the already-established channel via l2cap_chan_del(chan, ECONNRESET). Clear chan->ident for all matching channels on success, and harden the failure path by using l2cap_chan_hold_unless_zero() consistent with other L2CAP handlers (l2cap_le_command_rej, __l2cap_get_chan_by_ident).

References

NVD — CVE-2026-63976 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63976
git.kernel.org/stable/c/00e1950716... WEB
https://git.kernel.org/stable/c/00e1950716c6ed67d74777b2db286b0fa23b4be9
git.kernel.org/stable/c/3b5b5f423b... WEB
https://git.kernel.org/stable/c/3b5b5f423b4fd23404a393bda8adba3cd6f74ef1
git.kernel.org/stable/c/59f5ecf6ad... WEB
https://git.kernel.org/stable/c/59f5ecf6ad5c4db6ae81965a96156954a3b0d89a
git.kernel.org/stable/c/8e7977afae... WEB
https://git.kernel.org/stable/c/8e7977afaef37c6bd2b2654f1bce6ab40d471147
git.kernel.org/stable/c/ae0152d77d... WEB
https://git.kernel.org/stable/c/ae0152d77d101c920769934fb102b18de0c6f526
git.kernel.org/stable/c/c2afd2613f... WEB
https://git.kernel.org/stable/c/c2afd2613fda90107c5e2fe8e855627451749c78
git.kernel.org/stable/c/cc2b4f749d... WEB
https://git.kernel.org/stable/c/cc2b4f749de09975bfa06e58bbbad2f6acd4c79c
git.kernel.org/stable/c/f39049304b... WEB
https://git.kernel.org/stable/c/f39049304ba655ffcbb92edbdf8c51a1f1210bed

Frequently Asked Questions

What is CVE-2026-63976?
CVE-2026-63976 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-694: Use of Multiple Resources with Duplicate Identifier.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-63976?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-63976?
CVE-2026-63976 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-63976?
CVE-2026-63976 is classified under CWE-694: Use of Multiple Resources with Duplicate Identifier (The product uses multiple resources that can have the same identifier, in a context in which unique identifiers are required.).
How can I check Maven dependencies for CVE-2026-63976?
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 
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  "id" : "GHSA-2c97-7qvf-wx4v",
  "modified" : "2026-07-20T15:31:53Z",
  "published" : "2026-07-19T18:31:48Z",
  "aliases" : [ "CVE-2026-63976" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: clear chan->ident on ECRED reconfiguration success\n\nl2cap_ecred_reconf_rsp() returns early on success without clearing\nchan->ident. Every other L2CAP response handler (l2cap_ecred_conn_rsp,\nl2cap_le_connect_rsp, l2cap_config_rsp) clears chan->ident after a\nsuccessful transaction to prevent the channel from matching subsequent\nresponses with the recycled ident value.\n\nA remote attacker that completed a reconfiguration as the peer can\nreplay a failure response with the stale ident, causing the kernel to\nmatch and destroy the already-established channel via\nl2cap_chan_del(chan, ECONNRESET).\n\nClear chan->ident for all matching channels on success, and harden the\nfailure path by using l2cap_chan_hold_unless_zero() consistent with\nother L2CAP handlers (l2cap_le_command_rej, __l2cap_get_chan_by_ident).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
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    "url" : "https://git.kernel.org/stable/c/00e1950716c6ed67d74777b2db286b0fa23b4be9"
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  } ],
  "database_specific" : {
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    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:16Z"
  }
}