CVE-2026-89781: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-xf98-5fqf-rh4f
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CVSS 8.4
Published
Advisory Summary

CVE-2026-89781 is a HIGH (CVSS 8.4) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89781 at a Glance

CVE Identifier CVE-2026-89781
GHSA Identifier GHSA-xf98-5fqf-rh4f
Severity HIGH
CVSS v3.1 Base Score 8.4
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.4

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

Attack Vector Local (AV:L)
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-2026-89781

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-2026-89781, 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: fs/ntfs3: fix out-of-bounds read in read_log_rec_buf() read_log_rec_buf() copies a log record into a caller buffer starting at u32 off = lsn_to_page_off(log, lsn) + log->record_header_len; log->record_header_len (and log->data_off, used for the following pages) comes verbatim from the on-disk restart area and is only checked for 8-byte alignment in is_rst_area_valid(), so off can exceed log->page_size. "tail = log->page_size - off" then underflows and memcpy() reads past the page_size-sized buffer returned by read_log_page(), spilling adjacent slab memory into the replay buffer. This is reachable by mounting a crafted NTFS image: BUG: KASAN: slab-out-of-bounds in read_log_rec_buf+0x216/0x580 Read of size 64 at addr ffff88800a877ff8 by task exploit/127 read_log_rec_buf fs/ntfs3/fslog.c:2299 log_replay fs/ntfs3/fslog.c:4216 ntfs_loadlog_and_replay fs/ntfs3/fsntfs.c:324 ntfs_fill_super fs/ntfs3/super.c:1392 get_tree_bdev_flags fs/super.c:1694 __x64_sys_mount fs/namespace.c:4360 The buggy address is located 4088 bytes to the right of the 4096-byte region [ffff88800a876000, ffff88800a877000) Reject an in-page offset outside the current page before the copy. [almaz.alexandrovich@paragon-software.com: replaced the >= sign with >]

References

NVD — CVE-2026-89781 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89781
git.kernel.org/stable/c/1b2d31f108... WEB
https://git.kernel.org/stable/c/1b2d31f1083beb80c55d1152249f652c1445a559
git.kernel.org/stable/c/49f7cbc902... WEB
https://git.kernel.org/stable/c/49f7cbc902b08b56eb7d2633163ecc57a0e7145a
git.kernel.org/stable/c/53e56f7aa1... WEB
https://git.kernel.org/stable/c/53e56f7aa1d0f950a8bc2e4cdb3ba9fe45967531
git.kernel.org/stable/c/700973cc65... WEB
https://git.kernel.org/stable/c/700973cc65db405bde0368ccf88699390150943e
git.kernel.org/stable/c/74a83aa05f... WEB
https://git.kernel.org/stable/c/74a83aa05f73033af719771ab1f0c269928b4865
git.kernel.org/stable/c/de603b9d37... WEB
https://git.kernel.org/stable/c/de603b9d377fab57a5e6432fa84a9f36b32c1636
git.kernel.org/stable/c/df099bfdb5... WEB
https://git.kernel.org/stable/c/df099bfdb57773ba7f40f8a9dcc82e75af277922

Frequently Asked Questions

What is CVE-2026-89781?
CVE-2026-89781 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-2026-89781?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89781?
CVE-2026-89781 has a CVSS v3.1 base score of 8.4 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-89781?
CVE-2026-89781 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89781?
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-xf98-5fqf-rh4f",
  "modified" : "2026-09-16T15:30:57Z",
  "published" : "2026-09-16T09:30:30Z",
  "aliases" : [ "CVE-2026-89781" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: fix out-of-bounds read in read_log_rec_buf()\n\nread_log_rec_buf() copies a log record into a caller buffer starting at\n\n\tu32 off = lsn_to_page_off(log, lsn) + log->record_header_len;\n\nlog->record_header_len (and log->data_off, used for the following pages)\ncomes verbatim from the on-disk restart area and is only checked for\n8-byte alignment in is_rst_area_valid(), so off can exceed\nlog->page_size. \"tail = log->page_size - off\" then underflows and\nmemcpy() reads past the page_size-sized buffer returned by\nread_log_page(), spilling adjacent slab memory into the replay buffer.\n\nThis is reachable by mounting a crafted NTFS image:\n\n BUG: KASAN: slab-out-of-bounds in read_log_rec_buf+0x216/0x580\n Read of size 64 at addr ffff88800a877ff8 by task exploit/127\n  read_log_rec_buf fs/ntfs3/fslog.c:2299\n  log_replay fs/ntfs3/fslog.c:4216\n  ntfs_loadlog_and_replay fs/ntfs3/fsntfs.c:324\n  ntfs_fill_super fs/ntfs3/super.c:1392\n  get_tree_bdev_flags fs/super.c:1694\n  __x64_sys_mount fs/namespace.c:4360\n The buggy address is located 4088 bytes to the right of\n the 4096-byte region [ffff88800a876000, ffff88800a877000)\n\nReject an in-page offset outside the current page before the copy.\n\n[almaz.alexandrovich@paragon-software.com: replaced the >= sign with >]",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/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-2026-89781"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1b2d31f1083beb80c55d1152249f652c1445a559"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/49f7cbc902b08b56eb7d2633163ecc57a0e7145a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/53e56f7aa1d0f950a8bc2e4cdb3ba9fe45967531"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/700973cc65db405bde0368ccf88699390150943e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/74a83aa05f73033af719771ab1f0c269928b4865"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/de603b9d377fab57a5e6432fa84a9f36b32c1636"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/df099bfdb57773ba7f40f8a9dcc82e75af277922"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T09:17:08Z"
  }
}