CVE-2026-74649: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-3j7p-mfvr-mgx3
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CVSS 8.8
Published
Advisory Summary

CVE-2026-74649 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-2026-74649 at a Glance

CVE Identifier CVE-2026-74649
GHSA Identifier GHSA-3j7p-mfvr-mgx3
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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Adjacent (AV:A)
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-2026-74649

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-2026-74649, 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: staging: rtl8723bs: fix missing shared-key auth challenge length check The WEP shared-key authentication handler uses the challenge-text element's attacker-controlled length without checking it against the fixed 128-byte chg_txt buffer. In OnAuthClient() the length from rtw_get_ie() - up to 255 - is used to perform memcpy() into the 128-byte pmlmeinfo->chg_txt, so a malicious AP sending a malformed WLAN_EID_CHALLENGE element can overflow/underfill chg_txt by up to 127 bytes. It is reachable over the air, before association, during shared-key authentication. In the case of an overflow, the driver can write out of bounds. In the case of an underfill, the driver can echo stale buffer memory. The challenge text is defined to be exactly 128 octets, which is already provided as the WLAN_AUTH_CHALLENGE_LEN define; require the element to be exactly that length before use.

References

NVD — CVE-2026-74649 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74649
git.kernel.org/stable/c/2c56ef658a... WEB
https://git.kernel.org/stable/c/2c56ef658ac8c6bca36bc5574715e8f717207c6c
git.kernel.org/stable/c/39ae103307... WEB
https://git.kernel.org/stable/c/39ae1033071001af9bb4573ebdbb43bbbe88f749
git.kernel.org/stable/c/4ba402fd47... WEB
https://git.kernel.org/stable/c/4ba402fd47009d20e51dbfc934abb562098ea35b
git.kernel.org/stable/c/4d018e7d7d... WEB
https://git.kernel.org/stable/c/4d018e7d7d908bdfcb5ecfa922b1d5cb9ddb3722
git.kernel.org/stable/c/6235b5156b... WEB
https://git.kernel.org/stable/c/6235b5156b48ed5d1ce3410d8f0b2fd67d30d944
git.kernel.org/stable/c/87c2f073d2... WEB
https://git.kernel.org/stable/c/87c2f073d2aaea041d531b8e579c47570b54b3b7
git.kernel.org/stable/c/a28a4b0592... WEB
https://git.kernel.org/stable/c/a28a4b0592e4a37ea471bc0d308513a93133ce7e

Frequently Asked Questions

What is CVE-2026-74649?
CVE-2026-74649 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-2026-74649?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74649?
CVE-2026-74649 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74649?
CVE-2026-74649 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74649?
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-3j7p-mfvr-mgx3",
  "modified" : "2026-08-25T06:31:25Z",
  "published" : "2026-08-22T18:30:28Z",
  "aliases" : [ "CVE-2026-74649" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix missing shared-key auth challenge length check\n\nThe WEP shared-key authentication handler uses the challenge-text\nelement's attacker-controlled length without checking it against the\nfixed 128-byte chg_txt buffer.\n\nIn OnAuthClient() the length from rtw_get_ie() - up to 255 - is used\nto perform memcpy() into the 128-byte pmlmeinfo->chg_txt, so a\nmalicious AP sending a malformed WLAN_EID_CHALLENGE element can\noverflow/underfill chg_txt by up to 127 bytes. It is reachable over the\nair, before association, during shared-key authentication. In the case\nof an overflow, the driver can write out of bounds. In the case of an\nunderfill, the driver can echo stale buffer memory.\n\nThe challenge text is defined to be exactly 128 octets, which is\nalready provided as the WLAN_AUTH_CHALLENGE_LEN define; require the\nelement to be exactly that length before use.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/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-2026-74649"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2c56ef658ac8c6bca36bc5574715e8f717207c6c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/39ae1033071001af9bb4573ebdbb43bbbe88f749"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4ba402fd47009d20e51dbfc934abb562098ea35b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4d018e7d7d908bdfcb5ecfa922b1d5cb9ddb3722"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6235b5156b48ed5d1ce3410d8f0b2fd67d30d944"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/87c2f073d2aaea041d531b8e579c47570b54b3b7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a28a4b0592e4a37ea471bc0d308513a93133ce7e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-22T16:16:38Z"
  }
}