CVE-2026-52921: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-3v47-mwg3-xvq2
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CVSS 5.5
CWE-835
Published
Advisory Summary

CVE-2026-52921 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-52921 at a Glance

CVE Identifier CVE-2026-52921
GHSA Identifier GHSA-3v47-mwg3-xvq2
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
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-2026-52921

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-2026-52921, 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-835: Loop with Unreachable Exit Condition ('Infinite Loop'), where the product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. 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: ipset: stop hash:* range iteration at end The following hash set variants: hash:ip,mark hash:ip,port hash:ip,port,ip hash:ip,port,net iterate IPv4 ranges with a 32-bit iterator. The iterator must stop once the last address in the requested range has been processed. Advancing it once more can move the traversal state past the end of the request, so a later retry may continue from an unintended position. Handle the iterator increment explicitly at the end of the loop and stop once the upper bound has been processed. This keeps the existing retry behaviour intact for valid ranges while preventing traversal from continuing past the original boundary.

References

NVD — CVE-2026-52921 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52921
git.kernel.org/stable/c/02f75f041a... WEB
https://git.kernel.org/stable/c/02f75f041a93ea045834da89cd3234f4c1d749b4
git.kernel.org/stable/c/0b530efb2c... WEB
https://git.kernel.org/stable/c/0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc
git.kernel.org/stable/c/0d3a282ab5... WEB
https://git.kernel.org/stable/c/0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6
git.kernel.org/stable/c/0d7b33ace7... WEB
https://git.kernel.org/stable/c/0d7b33ace701fe397e6e4de145f32e098178d901
git.kernel.org/stable/c/383418c20e... WEB
https://git.kernel.org/stable/c/383418c20e69f5761b6ec5238f599423f4fb77fb
git.kernel.org/stable/c/952e988163... WEB
https://git.kernel.org/stable/c/952e988163c2ab9939c3db9f0f8e77af6a1bb436
git.kernel.org/stable/c/be75218fad... WEB
https://git.kernel.org/stable/c/be75218fadea22e59c8673db212f29c681bf45bb
git.kernel.org/stable/c/c281e018af... WEB
https://git.kernel.org/stable/c/c281e018af98df91827d65bec00f4956c00a1b02

Frequently Asked Questions

What is CVE-2026-52921?
CVE-2026-52921 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-52921?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-52921?
CVE-2026-52921 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-2026-52921?
CVE-2026-52921 is classified under CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') (The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.).
How can I check Maven dependencies for CVE-2026-52921?
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-3v47-mwg3-xvq2",
  "modified" : "2026-07-08T18:31:32Z",
  "published" : "2026-06-24T09:30:48Z",
  "aliases" : [ "CVE-2026-52921" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: stop hash:* range iteration at end\n\nThe following hash set variants:\n\nhash:ip,mark\nhash:ip,port\nhash:ip,port,ip\nhash:ip,port,net\n\niterate IPv4 ranges with a 32-bit iterator.\n\nThe iterator must stop once the last address in the requested range has\nbeen processed. Advancing it once more can move the traversal state past\nthe end of the request, so a later retry may continue from an unintended\nposition.\n\nHandle the iterator increment explicitly at the end of the loop and stop\nonce the upper bound has been processed. This keeps the existing retry\nbehaviour intact for valid ranges while preventing traversal from\ncontinuing past the original boundary.",
  "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",
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  }, {
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    "url" : "https://git.kernel.org/stable/c/02f75f041a93ea045834da89cd3234f4c1d749b4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6"
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    "url" : "https://git.kernel.org/stable/c/be75218fadea22e59c8673db212f29c681bf45bb"
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  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-835" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-24T08:16:22Z"
  }
}