CVE-2026-74494: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-fjvw-6pq5-f9hh
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Advisory Summary

CVE-2026-74494 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-2026-74494 at a Glance

CVE Identifier CVE-2026-74494
GHSA Identifier GHSA-fjvw-6pq5-f9hh
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-2026-74494

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-2026-74494, 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: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSION_SETUP. While the connection is in KSMBD_SESS_NEED_SETUP, smb2_handle_negotiate() accepts another SMB3.1.1 NEGOTIATE and overwrites conn->preauth_info with a new allocation. Only the final allocation is freed when the connection is released, leaking one object for every additional successful request. A repeated SMB2 NEGOTIATE after a dialect has been selected is a protocol violation. MS-SMB2 section 3.3.5.4 requires the server to disconnect without replying in this case. Set the connection exiting when rejecting the request, in addition to suppressing the response. Reject SMB2 NEGOTIATE unless the connection is new or is waiting for the SMB2 NEGOTIATE that follows an SMB1 multi-protocol negotiate. Serialize both SMB1 and SMB2 negotiation paths under conn->srv_mutex, since they update connection-wide dialect and negotiation state. Move the locking contract to ksmbd_smb_negotiate_common(), where the state and dialect are selected, and add ksmbd_conn_new() for consistent state access.

References

NVD — CVE-2026-74494 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74494
git.kernel.org/stable/c/0b1390cf2b... WEB
https://git.kernel.org/stable/c/0b1390cf2b6b91723b37c0909dd123f7a5eba1a7
git.kernel.org/stable/c/7e02cb30e8... WEB
https://git.kernel.org/stable/c/7e02cb30e8a1f5fc78cb10b220b06020e36d0bbe
git.kernel.org/stable/c/7fb8dbeb3f... WEB
https://git.kernel.org/stable/c/7fb8dbeb3f2868ae836ca12311d89aed16fc2927
git.kernel.org/stable/c/81e21cb7bd... WEB
https://git.kernel.org/stable/c/81e21cb7bd1479bb5238e0004a7e0110452c610b
git.kernel.org/stable/c/a60b5da05e... WEB
https://git.kernel.org/stable/c/a60b5da05e318d9a364dbac38c347c7f24e625e7
git.kernel.org/stable/c/cb469993b3... WEB
https://git.kernel.org/stable/c/cb469993b3a61a72653770856d37af616d72d05f
git.kernel.org/stable/c/fd6a6c43f9... WEB
https://git.kernel.org/stable/c/fd6a6c43f96b40a08a22ff62f08d194a49741c8a

Frequently Asked Questions

What is CVE-2026-74494?
CVE-2026-74494 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-2026-74494?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-74494?
CVE-2026-74494 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74494?
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-fjvw-6pq5-f9hh",
  "modified" : "2026-08-23T15:33:02Z",
  "published" : "2026-08-15T15:30:34Z",
  "aliases" : [ "CVE-2026-74494" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: reject repeated SMB2 NEGOTIATE requests\n\nUnauthenticated client can send multiple successful SMB2 NEGOTIATE\nrequests on one connection before SESSION_SETUP. While the connection is\nin KSMBD_SESS_NEED_SETUP, smb2_handle_negotiate() accepts another\nSMB3.1.1 NEGOTIATE and overwrites conn->preauth_info with a new allocation.\nOnly the final allocation is freed when the connection is released, leaking\none object for every additional successful request.\n\nA repeated SMB2 NEGOTIATE after a dialect has been selected is a protocol\nviolation. MS-SMB2 section 3.3.5.4 requires the server to disconnect\nwithout replying in this case. Set the connection exiting when rejecting\nthe request, in addition to suppressing the response.\n\nReject SMB2 NEGOTIATE unless the connection is new or is waiting for the\nSMB2 NEGOTIATE that follows an SMB1 multi-protocol negotiate. Serialize\nboth SMB1 and SMB2 negotiation paths under conn->srv_mutex, since they\nupdate connection-wide dialect and negotiation state.\n\nMove the locking contract to ksmbd_smb_negotiate_common(), where the state\nand dialect are selected, and add ksmbd_conn_new() for consistent state\naccess.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74494"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0b1390cf2b6b91723b37c0909dd123f7a5eba1a7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7e02cb30e8a1f5fc78cb10b220b06020e36d0bbe"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7fb8dbeb3f2868ae836ca12311d89aed16fc2927"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/81e21cb7bd1479bb5238e0004a7e0110452c610b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a60b5da05e318d9a364dbac38c347c7f24e625e7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cb469993b3a61a72653770856d37af616d72d05f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fd6a6c43f96b40a08a22ff62f08d194a49741c8a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T13:17:54Z"
  }
}