CVE-2026-72347: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-5j52-34gv-x96c
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CVSS 7.3
Published
Advisory Summary

CVE-2026-72347 is a HIGH (CVSS 7.3) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-72347 at a Glance

CVE Identifier CVE-2026-72347
GHSA Identifier GHSA-5j52-34gv-x96c
Severity HIGH
CVSS v3.1 Base Score 7.3
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.3

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:L/I:H/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 Low (C:L)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-72347

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-2026-72347, 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: netfilter: xt_connmark: reject invalid shift parameters Revision 2 of the CONNMARK target accepts user-controlled shift parameters and applies them to 32-bit mark values in connmark_tg_shift(). A shift_bits value of 32 or more triggers an undefined-shift bug when the rule is evaluated. Invalid shift_dir values are also accepted and silently fall back to the left-shift path. Reject invalid revision-2 shift parameters in connmark_tg_check() so malformed rules fail at installation time, before they can reach the packet path.

References

NVD — CVE-2026-72347 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72347
git.kernel.org/stable/c/1b47026fb4... WEB
https://git.kernel.org/stable/c/1b47026fb4b35bac850ad6e8a4ad7fc018e09ebc
git.kernel.org/stable/c/230173cc61... WEB
https://git.kernel.org/stable/c/230173cc6105bdfb2696d37e6e56687b003fbe63
git.kernel.org/stable/c/4eef84b09a... WEB
https://git.kernel.org/stable/c/4eef84b09a3836919360c4232b0f16651a155eec
git.kernel.org/stable/c/8ace320ac4... WEB
https://git.kernel.org/stable/c/8ace320ac4416f5e5fbcd065309fb2dfcce787b0
git.kernel.org/stable/c/9657bb11a6... WEB
https://git.kernel.org/stable/c/9657bb11a6376ab0a79f05d433713d6944111e9d
git.kernel.org/stable/c/c3fa852d11... WEB
https://git.kernel.org/stable/c/c3fa852d117b3fda72265e4230e3967db4a74fcf
git.kernel.org/stable/c/d8ce63d928... WEB
https://git.kernel.org/stable/c/d8ce63d928b457fba7ed1e302492dfd32293671c

Frequently Asked Questions

What is CVE-2026-72347?
CVE-2026-72347 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-2026-72347?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-72347?
CVE-2026-72347 has a CVSS v3.1 base score of 7.3 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H.
What CWE is associated with CVE-2026-72347?
CVE-2026-72347 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-72347?
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-5j52-34gv-x96c",
  "modified" : "2026-08-17T06:33:24Z",
  "published" : "2026-08-15T06:32:21Z",
  "aliases" : [ "CVE-2026-72347" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_connmark: reject invalid shift parameters\n\nRevision 2 of the CONNMARK target accepts user-controlled shift\nparameters and applies them to 32-bit mark values in\nconnmark_tg_shift().\n\nA shift_bits value of 32 or more triggers an undefined-shift bug when\nthe rule is evaluated. Invalid shift_dir values are also accepted and\nsilently fall back to the left-shift path.\n\nReject invalid revision-2 shift parameters in connmark_tg_check() so\nmalformed rules fail at installation time, before they can reach the\npacket path.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-72347"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1b47026fb4b35bac850ad6e8a4ad7fc018e09ebc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/230173cc6105bdfb2696d37e6e56687b003fbe63"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4eef84b09a3836919360c4232b0f16651a155eec"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8ace320ac4416f5e5fbcd065309fb2dfcce787b0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9657bb11a6376ab0a79f05d433713d6944111e9d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c3fa852d117b3fda72265e4230e3967db4a74fcf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d8ce63d928b457fba7ed1e302492dfd32293671c"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T06:22:08Z"
  }
}