CVE-2026-53220: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-7q5m-qv9w-c8xx
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CVSS 5.5
CWE-476
Published
Advisory Summary

CVE-2026-53220 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-476: NULL Pointer Dereference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product dereferences a pointer that it expects to be valid but is null.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-53220 at a Glance

CVE Identifier CVE-2026-53220
GHSA Identifier GHSA-7q5m-qv9w-c8xx
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-476: NULL Pointer Dereference
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

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

How to Fix CVE-2026-53220

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-2026-53220, 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-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. 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: netfilter: revalidate bridge ports ebt_redirect_tg() dereferences br_port_get_rcu() return without a NULL check, causing a kernel panic when the bridge port has been removed between the original hook invocation and an NFQUEUE reinject. A mere NULL check isn't sufficient, however. As sashiko review points out userspace can not only remove the port from the bridge, it could also place the device in a different virtual device, e.g. macvlan. If this happens, we must drop the packet, there is no way for us to reinject it into the bridge path. Switch to _upper API, we don't need the bridge port structure. Also, this fix keeps another bug intact: Both nfnetlink_log and nfnetlink_queue use CONFIG_BRIDGE_NETFILTER too aggressive, which prevents certain logging features when queueing in bridge family: NETFILTER_FAMILY_BRIDGE can be enabled while the old CONFIG_BRIDGE_NETFILTER cruft is off. Fixes tag is a common ancestor, this was always broken.

References

NVD — CVE-2026-53220 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53220
git.kernel.org/stable/c/43330a1e8a... WEB
https://git.kernel.org/stable/c/43330a1e8aace6b5a8de9aba127e9e394ab49b0f
git.kernel.org/stable/c/4beffcd726... WEB
https://git.kernel.org/stable/c/4beffcd726e2a731cea4dc18e1fbc55c8d76f1a0
git.kernel.org/stable/c/ccb9fd4b87... WEB
https://git.kernel.org/stable/c/ccb9fd4b87538ccf19ccff78ee26700526d94867
git.kernel.org/stable/c/d4b1301fd3... WEB
https://git.kernel.org/stable/c/d4b1301fd3c9e5e105fd3767c68bc4ba558bb228

Frequently Asked Questions

What is CVE-2026-53220?
CVE-2026-53220 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-476: NULL Pointer Dereference.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-53220?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-53220?
CVE-2026-53220 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-53220?
CVE-2026-53220 is classified under CWE-476: NULL Pointer Dereference (The product dereferences a pointer that it expects to be valid but is NULL.).
How can I check Maven dependencies for CVE-2026-53220?
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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  "schema_version" : "1.4.0",
  "id" : "GHSA-7q5m-qv9w-c8xx",
  "modified" : "2026-07-02T21:32:05Z",
  "published" : "2026-06-25T09:31:21Z",
  "aliases" : [ "CVE-2026-53220" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: revalidate bridge ports\n\nebt_redirect_tg() dereferences br_port_get_rcu() return without a\nNULL check, causing a kernel panic when the bridge port has been\nremoved between the original hook invocation and an NFQUEUE\nreinject.\n\nA mere NULL check isn't sufficient, however.  As sashiko review\npoints out userspace can not only remove the port from the bridge,\nit could also place the device in a different virtual device, e.g.\nmacvlan.\n\nIf this happens, we must drop the packet, there is no way for us to\nreinject it into the bridge path.\n\nSwitch to _upper API, we don't need the bridge port structure.\nAlso, this fix keeps another bug intact:\n\nBoth nfnetlink_log and nfnetlink_queue use CONFIG_BRIDGE_NETFILTER\ntoo aggressive, which prevents certain logging features when queueing\nin bridge family: NETFILTER_FAMILY_BRIDGE can be enabled while the old\nCONFIG_BRIDGE_NETFILTER cruft is off.\n\nFixes tag is a common ancestor, this was always broken.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-53220"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/43330a1e8aace6b5a8de9aba127e9e394ab49b0f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4beffcd726e2a731cea4dc18e1fbc55c8d76f1a0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ccb9fd4b87538ccf19ccff78ee26700526d94867"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d4b1301fd3c9e5e105fd3767c68bc4ba558bb228"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-25T09:16:39Z"
  }
}