CVE-2026-46149: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-vvx9-xfcg-g62v
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CVSS 7.1
CWE-126 CWE-674
Published
Advisory Summary

CVE-2026-46149 is a HIGH (CVSS 7.1) security vulnerability vulnerability (CWE-126: Buffer Over-read) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-46149 at a Glance

CVE Identifier CVE-2026-46149
GHSA Identifier GHSA-vvx9-xfcg-g62v
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-126: Buffer Over-read
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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

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

How to Fix CVE-2026-46149

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-2026-46149, 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 CWE-126: Buffer Over-read, where the product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. 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: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() target_tg_pt_gp_members_show() formats LUN paths with snprintf() into a 256-byte stack buffer, then will memcpy() cur_len bytes from that buffer. snprintf() returns the length the output would have had, which can exceed the buffer size when the fabric WWN is long because iSCSI IQN names can be up to 223 bytes. The check at the memcpy() site only guards the destination page write, not the source read, so memcpy() will read past the stack buffer and copy adjacent stack contents to the sysfs reader, which when CONFIG_FORTIFY_SOURCE is enabled, fortify_panic() will be triggered. Commit 27e06650a5ea ("scsi: target: target_core_configfs: Add length check to avoid buffer overflow") added the same bound to the target_lu_gp_members_show() but the tg_pt_gp variant was missed so resolve that here.

References

NVD — CVE-2026-46149 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46149
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/00d91bfdce... WEB
https://git.kernel.org/stable/c/00d91bfdce5033f5d9b4915638ae9b0553848b5d
git.kernel.org/stable/c/12f2201a56... WEB
https://git.kernel.org/stable/c/12f2201a56957ba020392223a7393a5eba080c1b
git.kernel.org/stable/c/1f678d13e9... WEB
https://git.kernel.org/stable/c/1f678d13e939f91840cb1ebe9b88544923539d3c
git.kernel.org/stable/c/72cc5ea7ef... WEB
https://git.kernel.org/stable/c/72cc5ea7ef32bb5fa38bf0dd2e56fcd73aa8c89e
git.kernel.org/stable/c/772a896a56... WEB
https://git.kernel.org/stable/c/772a896a56e0e3ef9424a025cec9176f9d8f4552
git.kernel.org/stable/c/d3cc9d490c... WEB
https://git.kernel.org/stable/c/d3cc9d490c207d57a289054397349f6f8c90354e
git.kernel.org/stable/c/db0a4759d6... WEB
https://git.kernel.org/stable/c/db0a4759d62cad4ff891e2d81ae4be73bb57f4a4
git.kernel.org/stable/c/e501154f9d... WEB
https://git.kernel.org/stable/c/e501154f9d82c95d2719bcbbaf679d8fd3226ef7

Frequently Asked Questions

What is CVE-2026-46149?
CVE-2026-46149 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-126: Buffer Over-read.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-46149?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-46149?
CVE-2026-46149 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-46149?
CVE-2026-46149 is classified under CWE-126: Buffer Over-read (The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.).
How can I check Maven dependencies for CVE-2026-46149?
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-vvx9-xfcg-g62v",
  "modified" : "2026-10-15T03:36:03Z",
  "published" : "2026-05-28T12:30:30Z",
  "aliases" : [ "CVE-2026-46149" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()\n\ntarget_tg_pt_gp_members_show() formats LUN paths with snprintf() into a\n256-byte stack buffer, then will memcpy() cur_len bytes from that\nbuffer.  snprintf() returns the length the output would have had, which\ncan exceed the buffer size when the fabric WWN is long because iSCSI IQN\nnames can be up to 223 bytes.  The check at the memcpy() site only\nguards the destination page write, not the source read, so memcpy() will\nread past the stack buffer and copy adjacent stack contents to the sysfs\nreader, which when CONFIG_FORTIFY_SOURCE is enabled, fortify_panic()\nwill be triggered.\n\nCommit 27e06650a5ea (\"scsi: target: target_core_configfs: Add length\ncheck to avoid buffer overflow\") added the same bound to the\ntarget_lu_gp_members_show() but the tg_pt_gp variant was missed so\nresolve that here.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-46149"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/00d91bfdce5033f5d9b4915638ae9b0553848b5d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/12f2201a56957ba020392223a7393a5eba080c1b"
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    "url" : "https://git.kernel.org/stable/c/1f678d13e939f91840cb1ebe9b88544923539d3c"
  }, {
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    "url" : "https://git.kernel.org/stable/c/72cc5ea7ef32bb5fa38bf0dd2e56fcd73aa8c89e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/772a896a56e0e3ef9424a025cec9176f9d8f4552"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d3cc9d490c207d57a289054397349f6f8c90354e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/db0a4759d62cad4ff891e2d81ae4be73bb57f4a4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e501154f9d82c95d2719bcbbaf679d8fd3226ef7"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-126", "CWE-674" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-28T10:16:30Z"
  }
}