CVE-2026-74520: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-9qch-cxwm-9cjc
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CVSS 8.8
Published
Advisory Summary

CVE-2026-74520 is a HIGH (CVSS 8.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74520 at a Glance

CVE Identifier CVE-2026-74520
GHSA Identifier GHSA-9qch-cxwm-9cjc
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification General Security Weakness
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:L/AC:L/PR:L/UI:N/S:C/C:H/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 Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-74520

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-2026-74520, 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: iommu/iommufd: Fix IOPF group ownership UAF iopf_group_alloc() links each last-page IOPF group into the generic IOPF pending list before invoking the domain fault handler. iommufd_fault_iopf_handler() also queued an accepted group in the IOMMUFD deliver list without removing it from the generic pending list. When detach or HWPT replacement drops the device's IOPF reference count to zero, an IOMMU driver may call iopf_queue_remove_device(). That function responds to and frees groups through the generic pending list without removing the same groups from IOMMUFD's deliver list or response xarray. A later read, response, or cleanup can then access the freed group and cause a UAF. Fix this by dequeuing an accepted group from the generic pending list before IOMMUFD queues it for userspace response. Make iopf_group_response() send a response regardless of pending-list membership, so the dequeued group can still be completed by IOMMUFD.

References

NVD — CVE-2026-74520 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74520
git.kernel.org/stable/c/4e74a36923... WEB
https://git.kernel.org/stable/c/4e74a369236424114b94cf6a9f5ff9e848b430b4
git.kernel.org/stable/c/6da8f37419... WEB
https://git.kernel.org/stable/c/6da8f37419dd4c456f26fc203f04e000186f4b3d
git.kernel.org/stable/c/738e6f32e6... WEB
https://git.kernel.org/stable/c/738e6f32e61d80b554e37015ecb7bc620b88001c

Frequently Asked Questions

What is CVE-2026-74520?
CVE-2026-74520 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-2026-74520?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74520?
CVE-2026-74520 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74520?
CVE-2026-74520 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74520?
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-9qch-cxwm-9cjc",
  "modified" : "2026-08-17T06:33:50Z",
  "published" : "2026-08-15T15:30:35Z",
  "aliases" : [ "CVE-2026-74520" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/iommufd: Fix IOPF group ownership UAF\n\niopf_group_alloc() links each last-page IOPF group into the generic IOPF\npending list before invoking the domain fault handler.\niommufd_fault_iopf_handler() also queued an accepted group in the\nIOMMUFD deliver list without removing it from the generic pending list.\n\nWhen detach or HWPT replacement drops the device's IOPF reference count\nto zero, an IOMMU driver may call iopf_queue_remove_device(). That\nfunction responds to and frees groups through the generic pending list\nwithout removing the same groups from IOMMUFD's deliver list or response\nxarray. A later read, response, or cleanup can then access the freed\ngroup and cause a UAF.\n\nFix this by dequeuing an accepted group from the generic pending list\nbefore IOMMUFD queues it for userspace response.\nMake iopf_group_response() send a response regardless of pending-list\nmembership, so the dequeued group can still be completed by IOMMUFD.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74520"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4e74a369236424114b94cf6a9f5ff9e848b430b4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6da8f37419dd4c456f26fc203f04e000186f4b3d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/738e6f32e61d80b554e37015ecb7bc620b88001c"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T13:17:57Z"
  }
}