CVE-2026-84621: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-p59r-2cp8-97mr
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CVSS 5.5
CWE-285
Published
Advisory Summary

CVE-2026-84621 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-285: Improper Authorization) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-84621 at a Glance

CVE Identifier CVE-2026-84621
GHSA Identifier GHSA-p59r-2cp8-97mr
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-285: Improper Authorization
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:H/I:N/A:N).

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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-84621

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-2026-84621, 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-285: Improper Authorization, where the product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. 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

An authorization issue was addressed with improved access control. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to access sensitive user data.

References

NVD — CVE-2026-84621 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84621
support.apple.com/en-us/149034 WEB
https://support.apple.com/en-us/149034
support.apple.com/en-us/149035 WEB
https://support.apple.com/en-us/149035
support.apple.com/en-us/149041 WEB
https://support.apple.com/en-us/149041
support.apple.com/en-us/149042 WEB
https://support.apple.com/en-us/149042
support.apple.com/en-us/149043 WEB
https://support.apple.com/en-us/149043

Frequently Asked Questions

What is CVE-2026-84621?
CVE-2026-84621 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-285: Improper Authorization.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-84621?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-84621?
CVE-2026-84621 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:H/I:N/A:N.
What CWE is associated with CVE-2026-84621?
CVE-2026-84621 is classified under CWE-285: Improper Authorization (The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Maven dependencies for CVE-2026-84621?
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-p59r-2cp8-97mr",
  "modified" : "2026-09-17T18:31:34Z",
  "published" : "2026-09-14T21:31:55Z",
  "aliases" : [ "CVE-2026-84621" ],
  "details" : "An authorization issue was addressed with improved access control. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to access sensitive user data.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-84621"
  }, {
    "type" : "WEB",
    "url" : "https://support.apple.com/en-us/149034"
  }, {
    "type" : "WEB",
    "url" : "https://support.apple.com/en-us/149035"
  }, {
    "type" : "WEB",
    "url" : "https://support.apple.com/en-us/149041"
  }, {
    "type" : "WEB",
    "url" : "https://support.apple.com/en-us/149042"
  }, {
    "type" : "WEB",
    "url" : "https://support.apple.com/en-us/149043"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-14T21:17:37Z"
  }
}