CVE-2026-90103: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-qgw9-h34w-h93j
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CVSS 7.5
Published
Advisory Summary

CVE-2026-90103 is a HIGH (CVSS 7.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-90103 at a Glance

CVE Identifier CVE-2026-90103
GHSA Identifier GHSA-qgw9-h34w-h93j
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-90103

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-2026-90103, 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: NFSv4.2: fix LAYOUTSTATS send buffer exhaustion encode_layoutstats_maxsz budgets XDR_QUADLEN(PNFS_LAYOUTSTATS_MAXSIZE), i.e. 256 bytes, for the layoutupdate4 body written by the layout driver. The flexfiles record can exceed that. ff_layout_encode_ff_layoutupdate() emits, per data server, a netaddr4, an nfs_fh4, two ff_io_latency4, an nfstime4 and a bool. A data server whose filehandle is NFS_MAXFHSIZE bytes long already accounts for 132 of those bytes, and the two ff_io_latency4 at 64 bytes each, the nfstime4 and the bool add a further 144, so the body passes 256 bytes before the netaddr4 is encoded at all. encode_layoutstats() additionally writes the deviceid4 and the layoutupdate4 lou_type word, neither of which the macro accounts for. The filehandle and the address are both chosen by the server, through LAYOUTGET and GETDEVICEINFO, so it can drive the encoder past the end of the send buffer. xdr_reserve_space() returns NULL once that happens, and the two ff_layout_encode_io_latency() calls run with dss_info->mirror->lock held, so a NULL return there leaves the lock permanently held. Raise PNFS_LAYOUTSTATS_MAXSIZE to 384 so that the record fits inside the reservation.

References

NVD — CVE-2026-90103 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90103
git.kernel.org/stable/c/3815b894b9... WEB
https://git.kernel.org/stable/c/3815b894b922e9b4f40b8b6f6d67bf80d44141c9
git.kernel.org/stable/c/397aa7000b... WEB
https://git.kernel.org/stable/c/397aa7000bbf6b6a0d32e66a544e978fb478c8e4
git.kernel.org/stable/c/5aca000630... WEB
https://git.kernel.org/stable/c/5aca000630c0fd0da102ae1abf9245dd74f2ce36
git.kernel.org/stable/c/842ac26615... WEB
https://git.kernel.org/stable/c/842ac26615424577f24f0486b9d3bf97f28fad9c
git.kernel.org/stable/c/a973622da0... WEB
https://git.kernel.org/stable/c/a973622da0c62c34043ddbbf382cd761b03e5136
git.kernel.org/stable/c/c75ef2137e... WEB
https://git.kernel.org/stable/c/c75ef2137e749f2673f0617cfdaae53b2bb7195a
git.kernel.org/stable/c/cb11590c7d... WEB
https://git.kernel.org/stable/c/cb11590c7ddc6883a1b1d70b1f98b2779fe626f2
git.kernel.org/stable/c/e82d7d999f... WEB
https://git.kernel.org/stable/c/e82d7d999fe9f893f84bf332fd39cb5d9de7128f

Frequently Asked Questions

What is CVE-2026-90103?
CVE-2026-90103 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-2026-90103?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-90103?
CVE-2026-90103 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-90103?
CVE-2026-90103 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90103?
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-qgw9-h34w-h93j",
  "modified" : "2026-09-18T18:31:26Z",
  "published" : "2026-09-17T18:31:51Z",
  "aliases" : [ "CVE-2026-90103" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4.2: fix LAYOUTSTATS send buffer exhaustion\n\nencode_layoutstats_maxsz budgets XDR_QUADLEN(PNFS_LAYOUTSTATS_MAXSIZE),\ni.e. 256 bytes, for the layoutupdate4 body written by the layout driver.\nThe flexfiles record can exceed that.\n\nff_layout_encode_ff_layoutupdate() emits, per data server, a netaddr4,\nan nfs_fh4, two ff_io_latency4, an nfstime4 and a bool.  A data server\nwhose filehandle is NFS_MAXFHSIZE bytes long already accounts for 132 of\nthose bytes, and the two ff_io_latency4 at 64 bytes each, the nfstime4\nand the bool add a further 144, so the body passes 256 bytes before the\nnetaddr4 is encoded at all.  encode_layoutstats() additionally writes\nthe deviceid4 and the layoutupdate4 lou_type word, neither of which the\nmacro accounts for.\n\nThe filehandle and the address are both chosen by the server, through\nLAYOUTGET and GETDEVICEINFO, so it can drive the encoder past the\nend of the send buffer.  xdr_reserve_space() returns NULL once that\nhappens, and the two ff_layout_encode_io_latency() calls run with\ndss_info->mirror->lock held, so a NULL return there leaves the lock\npermanently held.\n\nRaise PNFS_LAYOUTSTATS_MAXSIZE to 384 so that the record fits inside the\nreservation.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90103"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3815b894b922e9b4f40b8b6f6d67bf80d44141c9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/397aa7000bbf6b6a0d32e66a544e978fb478c8e4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5aca000630c0fd0da102ae1abf9245dd74f2ce36"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/842ac26615424577f24f0486b9d3bf97f28fad9c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a973622da0c62c34043ddbbf382cd761b03e5136"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c75ef2137e749f2673f0617cfdaae53b2bb7195a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cb11590c7ddc6883a1b1d70b1f98b2779fe626f2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e82d7d999fe9f893f84bf332fd39cb5d9de7128f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:17:02Z"
  }
}