CVE-2026-74735: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-wf96-m5fp-jh8c
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Advisory Summary

CVE-2026-74735 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74735 at a Glance

CVE Identifier CVE-2026-74735
GHSA Identifier GHSA-wf96-m5fp-jh8c
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-74735

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-2026-74735, 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: l2tp: fix tunnel and session refcount leak on seq_file release In pppol2tp_proc_open() and l2tp_dfs_seq_open(), iteration state (pd->tunnel and pd->session) is kept in seq_file private data to allow iteration across multiple read() system calls. However, if userspace closes /proc/net/pppol2tp or /sys/kernel/debug/l2tp/tunnels before reading to end-of-file (EOF), any tunnel or session reference stored in pd->tunnel / pd->session is left un-dropped when seq_file private data is freed. Fix this by dropping any remaining pd->tunnel and pd->session references in pppol2tp_proc_release() and l2tp_dfs_seq_release() when closing the file.

References

NVD — CVE-2026-74735 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74735
git.kernel.org/stable/c/8c4fde01bc... WEB
https://git.kernel.org/stable/c/8c4fde01bcf91f22b9c7ded8c3e14addd7ddd500
git.kernel.org/stable/c/9006c116dd... WEB
https://git.kernel.org/stable/c/9006c116dd111d457bf5d074990210f70a4ad2c8
git.kernel.org/stable/c/bdf8361378... WEB
https://git.kernel.org/stable/c/bdf83613781956cc39798ed08321f74ab0467f4d
git.kernel.org/stable/c/ebe2774e95... WEB
https://git.kernel.org/stable/c/ebe2774e956482dd3c70b8991f6f7654356339e6

Frequently Asked Questions

What is CVE-2026-74735?
CVE-2026-74735 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-2026-74735?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-74735?
CVE-2026-74735 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74735?
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-wf96-m5fp-jh8c",
  "modified" : "2026-09-21T15:31:30Z",
  "published" : "2026-09-21T15:31:30Z",
  "aliases" : [ "CVE-2026-74735" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nl2tp: fix tunnel and session refcount leak on seq_file release\n\nIn pppol2tp_proc_open() and l2tp_dfs_seq_open(), iteration state\n(pd->tunnel and pd->session) is kept in seq_file private data to allow\niteration across multiple read() system calls.\n\nHowever, if userspace closes /proc/net/pppol2tp or /sys/kernel/debug/l2tp/tunnels\nbefore reading to end-of-file (EOF), any tunnel or session reference stored in\npd->tunnel / pd->session is left un-dropped when seq_file private data is freed.\n\nFix this by dropping any remaining pd->tunnel and pd->session references in\npppol2tp_proc_release() and l2tp_dfs_seq_release() when closing the file.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74735"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8c4fde01bcf91f22b9c7ded8c3e14addd7ddd500"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9006c116dd111d457bf5d074990210f70a4ad2c8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bdf83613781956cc39798ed08321f74ab0467f4d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ebe2774e956482dd3c70b8991f6f7654356339e6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-26T15:16:52Z"
  }
}