CVE-2026-74492: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-j8fq-xqcv-34c2
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CVSS 8.4
Published
Advisory Summary

CVE-2026-74492 is a HIGH (CVSS 8.4) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74492 at a Glance

CVE Identifier CVE-2026-74492
GHSA Identifier GHSA-j8fq-xqcv-34c2
Severity HIGH
CVSS v3.1 Base Score 8.4
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.4

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

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

How to Fix CVE-2026-74492

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-2026-74492, 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: ipset: do not update comments from kernel-side hash adds mtype_resize() copies comment pointers with memcpy(), not the comment objects themselves. During the window after an entry has been copied but before the table swap and backlog replay, the old table is still published for packet-side updates while the replacement-table entry already holds the same ip_set_comment_rcu pointer. If xt_SET --add-set ... --exist hits that old entry in this window, mtype_add() calls ip_set_init_comment() even though packet-side adds carry no comment payload. That call frees the shared comment through the old entry, so the replacement-table entry now holds a stale pointer. When the queued add is replayed on the new table, mtype_add() calls ip_set_init_comment() again and strlen() dereferences the stale pointer. Fix this in mtype_add() by skipping ip_set_init_comment() when ext->target marks a packet-side add. Userspace adds still update comments, while packet-side adds can no longer free comment storage shared with a resize copy.

References

NVD — CVE-2026-74492 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74492
git.kernel.org/stable/c/16bfa7be2d... WEB
https://git.kernel.org/stable/c/16bfa7be2d76ca1e0aacfa363482e1bf8ab5042a
git.kernel.org/stable/c/4ae701848e... WEB
https://git.kernel.org/stable/c/4ae701848e4ba9e9713375fb7d82218cbd309da2
git.kernel.org/stable/c/661ff9c0cf... WEB
https://git.kernel.org/stable/c/661ff9c0cfbe07f8eed920dde9f7781491738207
git.kernel.org/stable/c/6f13f4d52d... WEB
https://git.kernel.org/stable/c/6f13f4d52d06986c18f12e8bffaab944dd27ceab
git.kernel.org/stable/c/77dbb248a5... WEB
https://git.kernel.org/stable/c/77dbb248a5cc7a5270cd37bbb0b635bf059a872a
git.kernel.org/stable/c/c710e9bf38... WEB
https://git.kernel.org/stable/c/c710e9bf38e4e71a8db85d26a0f70c0674664207
git.kernel.org/stable/c/f30415929b... WEB
https://git.kernel.org/stable/c/f30415929be8aeb002d557c8d3f7ab2d2188003a
git.kernel.org/stable/c/f9d6cabff1... WEB
https://git.kernel.org/stable/c/f9d6cabff1fca010562dcdb0d22b296bdca3ba5a

Frequently Asked Questions

What is CVE-2026-74492?
CVE-2026-74492 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-2026-74492?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74492?
CVE-2026-74492 has a CVSS v3.1 base score of 8.4 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74492?
CVE-2026-74492 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74492?
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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  "id" : "GHSA-j8fq-xqcv-34c2",
  "modified" : "2026-08-19T18:32:28Z",
  "published" : "2026-08-15T15:30:34Z",
  "aliases" : [ "CVE-2026-74492" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: do not update comments from kernel-side hash adds\n\nmtype_resize() copies comment pointers with memcpy(), not the comment\nobjects themselves. During the window after an entry has been copied but\nbefore the table swap and backlog replay, the old table is still\npublished for packet-side updates while the replacement-table entry\nalready holds the same ip_set_comment_rcu pointer.\n\nIf xt_SET --add-set ... --exist hits that old entry in this window,\nmtype_add() calls ip_set_init_comment() even though packet-side adds\ncarry no comment payload. That call frees the shared comment through the\nold entry, so the replacement-table entry now holds a stale pointer.\nWhen the queued add is replayed on the new table, mtype_add() calls\nip_set_init_comment() again and strlen() dereferences the stale pointer.\n\nFix this in mtype_add() by skipping ip_set_init_comment() when\next->target marks a packet-side add. Userspace adds still update\ncomments, while packet-side adds can no longer free comment storage\nshared with a resize copy.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
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    "url" : "https://git.kernel.org/stable/c/16bfa7be2d76ca1e0aacfa363482e1bf8ab5042a"
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    "type" : "WEB",
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    "url" : "https://git.kernel.org/stable/c/f9d6cabff1fca010562dcdb0d22b296bdca3ba5a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T13:17:54Z"
  }
}