CVE-2026-89603: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-qx6x-jhp8-p5pv
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CVSS 8.4
Published
Advisory Summary

CVE-2026-89603 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-2026-89603 at a Glance

CVE Identifier CVE-2026-89603
GHSA Identifier GHSA-qx6x-jhp8-p5pv
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:L/UI:N/S:C/C:H/I:H/A:N).

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

How to Fix CVE-2026-89603

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-2026-89603, 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: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscall_trace_enter() for ptrace, another thread can install a seccomp filter with SECCOMP_FILTER_FLAG_TSYNC (e.g., via seccomp_attach_filter()). This will successfully set SYSCALL_WORK_SECCOMP on the stopped thread, but syscall_trace_enter() evaluates a cached 'work' variable sampled on entry. Consequently, the subsequent check for SYSCALL_WORK_SECCOMP misses the newly assigned flag, and the filter is silently bypassed. This race condition could allow an unprivileged process to execute a prohibited system call (e.g., execve) that the newly installed filter was intended to block, especially since the tracer might have modified the system call number during the ptrace stop. Fix this by re-reading the syscall_work flags after ptrace handling, so that any new SYSCALL_WORK_SECCOMP flag set by another thread via TSYNC during the ptrace stop is observed before the subsequent seccomp check.

References

NVD — CVE-2026-89603 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89603
git.kernel.org/stable/c/09e8880ce5... WEB
https://git.kernel.org/stable/c/09e8880ce5409bdb84da991b053d7087502c181e
git.kernel.org/stable/c/22bb836fc1... WEB
https://git.kernel.org/stable/c/22bb836fc133331982c264227a899d4b26a09706
git.kernel.org/stable/c/23001ee5d8... WEB
https://git.kernel.org/stable/c/23001ee5d8631e30192cde6f6d3ccb6805570499
git.kernel.org/stable/c/459f33f828... WEB
https://git.kernel.org/stable/c/459f33f82864723a7fa366cf1091d9c6c893b6b2
git.kernel.org/stable/c/4a3591287f... WEB
https://git.kernel.org/stable/c/4a3591287fb7f808e209b4974ed337f609a2006b
git.kernel.org/stable/c/8709e7e1dd... WEB
https://git.kernel.org/stable/c/8709e7e1dd7d7de0651e61700edf24f5784f9243
git.kernel.org/stable/c/ab46474590... WEB
https://git.kernel.org/stable/c/ab4647459098a43e9d6fdb860836f08c962f3774
git.kernel.org/stable/c/eca5ed4200... WEB
https://git.kernel.org/stable/c/eca5ed4200f0be3e91f8a237b1f37582030a93a8

Frequently Asked Questions

What is CVE-2026-89603?
CVE-2026-89603 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-2026-89603?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89603?
CVE-2026-89603 has a CVSS v3.1 base score of 8.4 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
What CWE is associated with CVE-2026-89603?
CVE-2026-89603 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89603?
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 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-qx6x-jhp8-p5pv",
  "modified" : "2026-09-14T15:32:31Z",
  "published" : "2026-09-11T21:31:33Z",
  "aliases" : [ "CVE-2026-89603" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nentry: Fix seccomp bypass after ptrace with TSYNC\n\nSashiko review pointed out the following issue.\n\nIf a thread is stopped in syscall_trace_enter() for ptrace, another\nthread can install a seccomp filter with SECCOMP_FILTER_FLAG_TSYNC\n(e.g., via seccomp_attach_filter()). This will successfully set\nSYSCALL_WORK_SECCOMP on the stopped thread, but syscall_trace_enter()\nevaluates a cached 'work' variable sampled on entry. Consequently,\nthe subsequent check for SYSCALL_WORK_SECCOMP misses the newly\nassigned flag, and the filter is silently bypassed.\n\nThis race condition could allow an unprivileged process to execute\na prohibited system call (e.g., execve) that the newly installed filter\nwas intended to block, especially since the tracer might have modified\nthe system call number during the ptrace stop.\n\nFix this by re-reading the syscall_work flags after ptrace handling,\nso that any new SYSCALL_WORK_SECCOMP flag set by another thread via\nTSYNC during the ptrace stop is observed before the subsequent\nseccomp check.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
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    "url" : "https://git.kernel.org/stable/c/09e8880ce5409bdb84da991b053d7087502c181e"
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    "type" : "WEB",
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    "url" : "https://git.kernel.org/stable/c/eca5ed4200f0be3e91f8a237b1f37582030a93a8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:45Z"
  }
}