CVE-2026-74473: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-h9rh-wf2h-cr4c
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CVSS 9.8
Published
Advisory Summary

CVE-2026-74473 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74473 at a Glance

CVE Identifier CVE-2026-74473
GHSA Identifier GHSA-h9rh-wf2h-cr4c
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)
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-2026-74473

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-2026-74473, 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: vxlan: use pskb_network_may_pull() in route_shortcircuit() route_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr)) (or ipv6hdr), which checks if bytes are available starting from skb->data. However, in vxlan_xmit(), skb->data points to the MAC header, so skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20) only checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of IP header), leaving the rest of the IP header potentially un-pulled in non-linear frags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled linear buffer length. Fix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to the length check to ensure the full network header is present in the linear buffer.

References

NVD — CVE-2026-74473 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74473
git.kernel.org/stable/c/214ba43faf... WEB
https://git.kernel.org/stable/c/214ba43faf106cb06cd3dd30999c5c809c868b53
git.kernel.org/stable/c/26bb2dd0a8... WEB
https://git.kernel.org/stable/c/26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb
git.kernel.org/stable/c/42887be7c4... WEB
https://git.kernel.org/stable/c/42887be7c4cf283cce02cd0fb6411221167c8b6c
git.kernel.org/stable/c/4f3f96e771... WEB
https://git.kernel.org/stable/c/4f3f96e771a20263635bb5e1307c112d613b4bbd
git.kernel.org/stable/c/6bd0a3a1b5... WEB
https://git.kernel.org/stable/c/6bd0a3a1b5744166946f0c551a6665c3b46b05e4
git.kernel.org/stable/c/aa0d31376d... WEB
https://git.kernel.org/stable/c/aa0d31376d574ac858a40078431a77127bf04ee4
git.kernel.org/stable/c/c419af4924... WEB
https://git.kernel.org/stable/c/c419af4924c1593500a40519730ed98575d04a3e
git.kernel.org/stable/c/ee799977d7... WEB
https://git.kernel.org/stable/c/ee799977d7941dbfb11049e17edd9eaf4f8820f7

Frequently Asked Questions

What is CVE-2026-74473?
CVE-2026-74473 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-2026-74473?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74473?
CVE-2026-74473 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74473?
CVE-2026-74473 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74473?
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-h9rh-wf2h-cr4c",
  "modified" : "2026-08-19T18:32:28Z",
  "published" : "2026-08-15T15:30:33Z",
  "aliases" : [ "CVE-2026-74473" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use pskb_network_may_pull() in route_shortcircuit()\n\nroute_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr))\n(or ipv6hdr), which checks if bytes are available starting from skb->data.\n\nHowever, in vxlan_xmit(), skb->data points to the MAC header, so\nskb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20)\nonly checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of\nIP header), leaving the rest of the IP header potentially un-pulled in non-linear\nfrags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled\nlinear buffer length.\n\nFix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to\nthe length check to ensure the full network header is present in the linear buffer.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74473"
  }, {
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    "url" : "https://git.kernel.org/stable/c/214ba43faf106cb06cd3dd30999c5c809c868b53"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb"
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  }, {
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ee799977d7941dbfb11049e17edd9eaf4f8820f7"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T13:17:52Z"
  }
}